Title of Invention

MEROCYANINE DERIVATIVES FOR COSMETIC USE

Abstract

The use is described of merocyanine derivatives of formula (1), wherein R<sub>1</sub> and R<sub>2</sub> are each independently of the other hydrogen; C<sub>1</sub>-C<sub>22</sub>alkyl; cyclo-C<sub>3</sub>C<sub>8</sub>alkyl; or unsubstituted or C<sub>1</sub>-C<sub>5</sub>alkyl- or C<sub>1</sub>-C<sub>5</sub>alkoxy-substituted C<sub>6</sub>-C<sub>20</sub>aryl; orl; or R<sub>1</sub> and R<sub>2</sub> together with the nitrogen atom linking them form a -(CH<sub>2</sub>)<sub>m</sub>- ring which is uninterrupted or. interrupted by -O- or by -NH-; R<sub>3</sub> is a cyano group; -COOR<sub>5</sub>; -CONHR<sub>5</sub>; -COR<sub>5</sub>; or -SO2R<sub>5</sub>; R<sub>4</sub> is a cyano group; -COOR<sub>6</sub>; -CONHR<sub>6</sub>; -COR<sub>6</sub>; or -SO2R<sub>6</sub>; R<sub>5</sub> and R<sub>6</sub> are each independently of the other C<sub>1</sub>-C<sub>22</sub>alkyl; or unsubstituted or C<sub>1</sub>-C <sub>5</sub>alkyl substituted C<sub>6</sub>-C <sub>20</sub>aryl; or R<sub>3</sub> and R<sub>4</sub> together or R<sub>5</sub> and R<sub>6</sub> together form a 5- to 7-membered, monocyclic, carbocyclic or heterocyclic ring; Z1, and Z2 are each independently of the other a -(CH<sub>2</sub>),- group which is uninterrupted or interrupted by -O-, -S-, or by -NR<sub>7</sub>-, and/or is unsubstituted or substituted by C<sub>1</sub>-C<sub>5</sub> alkyl; R<sub>7</sub> is C<sub>1</sub> C<sub>5</sub>alkyl; I is from 1 to 4; m is from 1 to 7; n is from 1 to 4; when n = 2, R<sub>1</sub>, R <sub>5</sub> or R<sub>6</sub> is a bivalent alkyl group; or R<sub>1</sub>, and R<sub>2</sub> together with the 2 nitrogen atoms linking them form a -(CH<sub>2</sub>)<sub>m</sub>- ring; when n = 3, R<sub>1</sub>, R<sub>5</sub> or R<sub>6</sub> is a trivalent alkyl group; when n = 4, R<sub>1</sub>, R<sub>5</sub> or R<sub>6</sub> is a tetravalent alkyl group; and R<sub>1</sub>, and R<sub>2</sub> in formula (1) are not simultaneously hydrogen, in protecting human and animal hair and skin from UV radiation.

Full Text

when n = 4, R1, R5 or R6 is a tetravalent alkyl group; and R1 and R2 in formula (1) are not simultaneously hydrogen. Preference is given to the use of compounds of formula R1 and R2 are each independently of the other hydrogen; C1-C22alkyI; or unsubstituted or C1-C5alkyI- or CrCsalkoxy-substituted C6-C20aryl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; R4 is a cyano group; -COOR6; -CONHR6; -COR6; or -SO2R6; R5 and R6 are each independently of the other Ci-C22alkyl; or unsubstituted or C1-C5alkyl- substituted C6-C20aryl; or R5 and R6 together form a 5- to 7-membered, monocyclic, carbocyclic or heterocyclic ring; Z is a -(CH2)r group which is uninterrupted or interrupted by -0-, -S-, or by -NR7-, and/or is unsubstituted or substituted by C1-C5alkyl; R7 is C1-C6alkyI; I is from 1 to 4; m is from 1 to 7; n is from 1 to 4; when n = 2, Ri, R5 or R6 is a bivalent alkyl group; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; when n = 3. R1, R5 or R6 is a trivalent alkyl group; when n = 4, R1, R5 or R6 is a tetravalent alkyl group; and R1 and R2 in formula (1) are not simultaneously hydrogen. The compounds of formula (1) may be present in the form of E,E-, E,Z- or Z,Z-isomers, C1-C22Alkyl denotes a linear or branched, unsubstituted or substituted alkyl group such as, for example, methyl, ethyl, propyl, isopropyl. n-butyl, n-hexyl, cyclohexy!, n-decyl, n-dodecyl, n-octadecyl, eicosyl, methoxyethyl, ethoxypropyl, 2-ethylhexyl, hydroxyethyl, chloropropyl, N,N-diethylaminopropyl, cyanoethyl, phenethyl, benzyl, p-tert-butylphenethyl, p-tert-octyl-phenoxyethyl, 3-(2,4-di-tert-amylphenoxy)-propyl, ethoxycarbonylmethyl-2-(2-hydroxy-ethoxy)ethyl or 2-furylethyl. C1-C6alkoxy denotes methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butcxy, tert-butoxy, amyloxy, isoamyloxy or tert-amyloxy. C6-C10aryl denotes, for example, phenyl, tolyl, anisyl, mesityl, chlorophenyl, 2,4-di-tert-amylphenyl and naphthyl. Heterocyclic radicals contain one, two, three or four identical or different ring hetero atoms. Special preference is given to heterocycies which contain one, two or three, especially one or two, identical or different hetero atoms. The heterocycies may be mono- or poly-cyclic, for example mono-, bi- or tri-cyclic. They are preferably mono- or bi-cyclic, especially mono¬cyclic. The rings preferably contain 5, 6 or 7 ring members. Examples of monocyclic and bicyclic heterocyclic systems from which radicals occurring in the compounds of formula (1) or (2) may be derived are, for example, pyrrole, furan, thiophene, imidazole, pyrazole, 1,2,3-triazole, 1,2,4-triazole, pyridine, pyridazine, pyrimidine, pyrazine, pyran, thiopyran, 1,4-dioxane, 1,2-oxazine, 1,3-oxazine, 1,4-oxa2ine, indole, benzothiophene, benzofuran, pyrrolidine, piperidine, piperazine, morpholine and thiomorpholine. When R5 and R6 together form a 5- to 7-membered monocyclic carbocyclic or heterocyclic ring, such a ring is, for example, a 1,3-dioxocyclohexane ring such as, for example, a dimedone ring, a 1,3-dioxo-5,5-diethylcyclohexane ring, a 1,3-diaza-2,4,6-trioxocyclohexane ring such as, for example, a barbituric acid ring, a 1,3-dimethylbarbituric acid ring, a 1-phenylbarbituric acid ring, a 1-methyl-3-octylbarbituric acid ring, a 1-ethyl-3-octyloxy-carbonylethylbarbituric acid ring, a 1,2-diaza-3,5-dioxocyc!opentane ring such as, for example, a 1,2-diaza-1,2-dimethyl-3,5-dioxocyclopentane ring, a 1,2-diaza-1,2-diphenyl-3,5-dioxocyclopentane ring, or a 2,4-diaza-1-alkoxy-3,5-dioxocyclohexene ring such as, for example, a 2,4-diaza-1-ethoxy-4-ethyl-3,5-dioxocyciohexene ring, a 2,4-diaza-1-ethoxy-4-[3-(2,4-di-tert-amylphenoxy)propyl]-3,5-dioxocyclohexene ring etc.. Preference is given to the use in accordance with the invention of compounds of formula (1) or (2) wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a "(CH2)ni- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; "COR5; or -SO2R5; R4 is a cyano group; -COOR6 -CONHR6 -COR6; or -SO2R6; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl; and Z is as defined in claim 1. Amongst those compounds special preference is given to compounds of formula (1) or (2) wherein R3 is a cyano group; and R4 is-CONHR6; and R6 is C1-C22alkyl; or C6-C20aryl, and especially to compounds of formula (1) or (2) wherein R6 is C4-C20alkyl. Preference is also given to compounds of formula (1) or (2) wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COOR5; R4 is a cyano group; -COORei or -SO2R6; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl; and m is from 1 to 7. Amongst those compounds preference is given to those wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COORs; R4 is-COORe; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl; and m is from 1 to 7; and to compounds of formula (1) or (2) wherein R1 and R2 are each independently of the other C1-C22alkyl; or R, and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COORs; R4 is a cyano group; R5 is C1-C22alkyl; or C6-C20aryi; and m is from 1 to 7; and to compounds of formula (1) or (2) wherein R1 and R2 are each independently of the other d-Casalkyl; or R1, and R2 together with the nitrogen atom linking them form a -(CH2)m" ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COORs; R4 is-SO2R6; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C2oaryl; and m is from 1 to 7. Preference is further given to the use of compounds of formula R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the 2 nitrogen atoms linking them form a "(CH2)m" ring; X is -O-; or -NH-; Z2 a -(CH2)r group which is uninterrupted or interrupted by -O-, -S-, or by -NR7-, and/or is unsubstituted or substituted by C1-C6alkyl; and n is from 1 to 3; and especially compounds of formula (3) wherein R1 and R2 are each independently of the other C1-C22alkyI; or R1 and R2 together with the R1 and R2 are each independently of the other C1-Caaalkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CHaJm- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; and R5 and R6 are each independently of the other C1-C22alkyl; or C6-C2oaryl; and very especially compounds of formula (4) wherein R, and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; and R5 is C1-C22alkyl; or C6-C2oaryl; and very especially compounds of formula (4) wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the Compounds of formula (2) that are preferably used are those wherein Z is an atom grouping which results in the formation of an oxazolidine ring, a pyrrolidine ring or a thiazolidine ring. Amongst those compounds very special preference is given to those of formula R6 and R9 are each independently of the other hydrogen; or C1-C5alkyi; and Y is -O-; -S-; or -CH2-; and Rt, R3. R4 and n are as defined in claim 1. Special preference Is given to compounds of formula (2a) wherein R1 is C1-C12alkyl; R3 is a cyano group; -COOR5; -COR5; or -SO2R5; R4 is-COR6;or-COOR6;and R5 and R6 are each independently of the other unsubstituted or C1-C5alkyI- or C1-C5alkoxy-substituted C6-C20aryl. Further compounds for use in accordance with the invention are listed in Table MC1 hereinbelow: The merocyanine compounds of formula (1) or (2) used in accordance with the invention are, in some cases, known compounds but also include novel compounds. The UV absorbers according to the present invention can be used either in the dissolved state (soluble organic filters, solubilised organic filters) or in the micronised state (nanoscalar organic filters, particulate organic filters, UV-absorber pigments). Any known process suitable for the preparation of microparticles can be used for the preparation of the micronised UV absorbers, for example: wet-milling (low-viscosity micronisation process for pumpable dispersions), with a hard grinding medium, for example zirconium silicate balls in a ball mill, and a protective surfactant or a protective polymer in water or in a suitable organic solvent; wet-kneading (high-viscosity micronisation process for non-pumpable pastes) using a continuous or discontinuous (batch) kneader. For a wet-kneading process, a solvent (water or cosmetically acceptable oils), a grinding aid (surfactant, emulsifier) and a polymeric grinding aid may be used. Both processes may be used preferably. spray-drying from a suitable solvent, for example aqueous suspensions or suspensions containing organic solvents, or true solutions in water, ethanol, dichloroethane, toluene or N-methylpyrrolidone etc.. by expansion according to the RESS process (Rapid Expansion of Supercritical Solutions) of supercritical fluids (e.g. CO2) in which the UV filter or filters is/are dissolved, or the expansion of liquid carbon dioxide together with a solution of one or moR6 UV filters in a suitable organic solvent; by reprecipitation from suitable solvents, including supercritical fluids (GASR process = Gas Anti-Solvent Recrystallisation / PCA process = Precipitation with Compressed Anti-solvents). The UV absorbers according to the present invention can also be used dry in powder form. For that purpose, the UV absorbers are subjected to known grinding methods, such as vacuum atomisation, countercurrent spray-drying etc.. Such powders have a particle size of from 0.1 micrometres to 2 micrometres. To avoid the occurrence of agglomeration, the UV absorbers can be coated with a surface-active compound prior to the pulverisation process, for example with an anionic, non-ionic or amphoteric surfactant, e.g. a phospholipid or a known polymer, such as PVP. an acrylate etc.. The UV absorbers according to the present invention can also be used in specific carriers for cosmetics, for example in solid lipid nanoparticles (SLN) or in inert sol-gel microcapsules wherein the UV absorbers are encapsulated. The cosmetic formulations or pharmaceutical compositions according to the present invention can also comprise one or moR6 than one further UV filter as described in Tables 1-3. The cosmetic or pharmaceutical preparations can be prepared by physically mixing the UV absorber(s) with the adjuvant using customary methods, for example by simply stirring together the individual components, especially by making use of the dissolution properties of already known cosmetic UV absorbers, for example octyl methoxycinnamate, salicylic acid isooctyl ester etc.. The UV absorber can be used, for example, without further treatment, or in the micronised state, or in the form of a powder. Cosmetic or pharmaceutical preparations contain from 0.05 % to 40 % by weight, based on the total weight of the composition, of one UV absorber or a mixtuR6 of UV absorbers. Preference is given to the use of mixing ratios of the UV absorber of formula (1) according to the present invention and optional further light-protective agents (as described in Tables 1-3) of from 1:99 to 99:1, especially from 1:95 to 95:1 and preferably from 10:90 to 90:10. based on weight. Of special interest are mixing ratios of from 20:80 to 80:20, especially from 40:60 to 60:40 and preferably approximately 50:50. Such mixtures can be used, inter alia, to improve solubility or increase UV absorption. The UV absorbers of formula (1) according to the present invention or combinations of UV . filters are useful for protecting skin, hair and/or natural or artificial hair colour. Suitable UV filter substances which can additionally be used with the UV absorbers according to the present invention are any UV-A and UV-B filter substances. The cosmetic or pharmaceutical preparations may be, for example, creams, gels, lotions, al¬coholic and aqueous/alcoholic solutions, emulsions, wax/fat compositions, stick preparations, powders or ointments. In addition to the above-mentioned UV filters, the cosmetic or pharma¬ceutical preparations may contain further adjuvants as described below. As water- and oil-containing emulsions (e.g. W/0, 0/W, OA/V/0 and W/O/W emulsions or mi-croemulsions) the preparations contain, for example, from 0.1 to 30 % by weight, preferably from 0.1 to 15 % by weight and especially from 0.5 to 10 % by weight, based on the total weight of the composition, of one or moR6 UV absorbers, from 1 to 60 % by weight, espec¬ially from 5 to 50 % by weight and preferably from 10 to 35 % by weight, based on the total weight of the composition, of at least one oil component, from 0 to 30 % by weight, especially from 1 to 30 % by weight und preferably from 4 to 20 % by weight, based on the total weight of the composition, of at least one emulsifier, from 10 to 90 % by weight, especially from 30 to 90 % by weight, based on the total weight of the composition, of water, and from 0 to 88.9 % by weight, especially from 1 to 50 % by weight, of further cosmetically acceptable adju¬vants. The cosmetic or pharmaceutical compositions/preparations according to the invention may also comprise one or one moR6 additional compounds as described below. Fattv alcohols Guerbet alcohols based on fatty alcohols having from 6 to 18, preferably from 8 to 10, carbon atoms, including cetyl alcohol, stearyl alcohol, cetearyl alcohol, oleyl alcohol, octyldodecanol, benzoates of Cia-Cis alcohols, acetylated lanolin alcohol etc.. Esters of fattv acids Esters of linear C6-C24 fatty acids with linear C3-C24 alcohols, esters of branched Ce-Ciscar-boxylic acids with linear C6-C24 fatty alcohols, esters of linear C6-C24 fatty acids with branched alcohols, especially 2-ethylhexanol, esters of hydroxycarboxylic acids with linear or branched C6-C22 fatty alcohols, especially dioctyl maiates, esters of linear and/or branched fatty acids A/ith polyhydric alcohols (for example propylene glycol, dimer diolor trimer trio!) and/or Guar- alcohols, for example caproic acid, caprylic acid, 2-ethylhexanoic acid, capric acid, lauric acid, isotridecanoic acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, elaeostearic acid, arachidic acid, gadoleic acid, behenic acid and erucic acid and technical-grade mixtures thereof (obtained, for example, in the pressuR6 removal of natural fats and oils, in the reduc¬tion of aldehydes from Roeien's oxosynthesis or in the dimerisation of unsaturated fatty acids) with alcohols, for example, isopropyl alcohol, caproic alcohol, capryl alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linoyl alcohol, linolenyl alcohol, elaeostearyl alcohol, arachidyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidyl alcohol and technical-grade mixtures thereof (obtained, for example, in the high-pressuR6 hydrogenation of technical-grade methyl esters based on fats and oils or aldehydes from Roeien's oxosynthesis and as monomer fractions in the dimerisation of unsaturated fatty alcohols). Examples of such ester oils are isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononyl isononanoate, 2-ethyIhexyl palmitate, 2-hexyl laurate, 2-hexyldecyl stearate, 2-octyldodecyl palmitate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, cetearyl octanoate, cetyl palmitate, cetyl stearate, cetyl oleate, cetyl behenate, cetyl acetate, myristyl myristate, myristyl behenate, myristyl oleate, myristyl stearate, myristyl palmitate, myristyl lactate, propylene glycol dicaprylate/caprate, stearyl heptanoate, diisostearyl malate, octyl hydroxystearate etc. Other adiuvants Diethylhexyl 2,6-naphthalate, di-n-butyl adipate, di(2-ethylhexyl) adipate, di(2-ethylhexyl) succinate and diisotridecyl acetate, and also diol esters, such as ethylene glycol dioleate, ethylene glycol diisotridecanoate, propylene glycol di(2-ethylhexanoate), propylene glycol diisostearate, propylene glycol dipelargonate, butanediol diisostearate and neopentyl glycol dicaprylate. Esters of C6-C24 fatty alcohols and/or Guerbet alcohols with aromatic carboxylic acids, saturated and/or unsaturated, especially benzoic acid, esters of C2-C12dicarboxylic acids with linear or branched alcohols having from 1 to 22 carbon atoms or polyols having from 2 to 10 carbon atoms and from 2 to 6 hydroxy groups, oriminodisuccinic acid and iminodisuccinic acid salts [CAS 7408-20-0] or latex particles. Natural or synthetic triqlvcerides. including glvceryl esters and derivatives Di- or tri-glycerides, based on C6-C18 fatty acids, modified by reaction with other alcohols (caprylic/capric triglyceride, wheatgerm glycerides, etc.). Fatty acid esters of polyglycerol (polyglyceryl-n such as polyglyceryl-4 caprate, polyglyceryl-2 Isostearate, etc.) or castor oil, hydrogenated vegetable oil, sweet almond oil. wheatgerm oil, sesame oil, hydrogenated cottonseed oil, coconut oil, avocado oil, corn oil, hydrogenated castor oil, shea butter, cocoa butter, soybean oil, mink oil, sunflower oil, safflower oil, macadamia nut oil, olive oil, hydrogenated tallow, apricot kernel oil, hazelnut oil, borage oil etc.. Waxes, including esters of long-chain acids and alcohols as well as compounds having wax¬like properties, e.g. carnauba wax, beeswax (white or yellow), lanolin wax, candelilla wax, ozokerite, japan wax, paraffin wax, microcrystalline wax, ceresin, cetearyl ester wax, synthetic beeswax etc.. Also, hydrophilic waxes such as cetearyl alcohol or partial glycerides. Pearlescent waxes: Alkylene glycol esters, especially ethylene glycol distearate; fatty acid alkanolamides, especially coco fatty acid diethanolamide; partial glycerides, especially stearic acid monoglyceride; esters of polyvalent, unsubstituted or hydroxy-substituted carboxylic acids with fatty alcohols having from 6 to 22 carbon atoms, especially long-chained esters of tartaric acid; fatty substances, for example fatty alcohols, fatty ketones, fatty aldehydes, fatty ethers and fatty carbonates, which in total have at least 24 carbon atoms, especially laurone and distearyi ether; fatty acids, such as stearic acid, hydroxystearic acid or behenic acid, ring-opening products of olefin epoxides having from 12 to 22 carbon atoms with fatty alcohols having from 12 to 22 carbon atoms and/or polyols having from 2 to 15 carbon atoms and from 2 to 10 hydroxy groups, and mixtures thereof. Hydrocarbon oils: Mineral oil (light or heavy), petrolatum (yellow or white), microcrystalline wax, paraffinic and isoparaffinic compounds, hydrogenated isoparaffinic molecules such as polydecenes and polybutene, hydrogenated polyisobutene, squalane, isohexadecane, isododecane and others of vegetable or animal origin. Silicones or siloxanes (organo-substituted polysiloxanes) Dimethylpolysiloxanes, methylphenylpolysiloxanes, cyclic silicones, and also amino-, fatty acid-, alcohol-, polyether-, epoxy-, fluorine-, glycoside- and/or alkyl-modified silicone compounds, which at room temperatuR6 may be in either liquid or resinous form. Linear poly-siloxanes, dimethicone (Dow Corning 200 fluid, Rhodia Mirasil DM), dimethiconol, cyclic silicone fluids, cyclopentasiloxane volatiles (Dow Corning 345 fluid), phenyltrimethicone (Dow Corning 556 fluid). Also suitable are simethicones, which are mixtures of dimethicones having an average chain length of from 200 to 300 dimethylsiloxane units with hydrogenated silicates. A detailed survey by Todd et ai of suitable volatile silicones may in addition be found in Cosm. Toil. 91. 27 (1976). Fluorinated or perfluorinated oils Perfluorohexane, dimethylcyclohexane, ethylcyclopentane, polyperfluoromethylisopropyl ether. Emulsifiers Any conventionally usable emulsifier can be used for the compositions. Emulsifier systems may comprise, for example: carboxylic acids and their salts: alkaline soaps of sodium, potassium and ammonium, metallic soaps of calcium or magnesium, organic-based soaps such as lauric, palmitic, stearic and oleic acid etc.. Alkyl phosphates or phosphoric acid esters, acid phosphates, diethanolamine phosphate, potassium cetyl phosphate. Ethoxylated carboxylic acids or polyethylene glycol esters, PEG-n acylates. Linear fatty alcohols having from 8 to 22 carbon atoms, branched, from 2 to 30 mol of ethylene oxide and/or from 0 to 5 mol of propylene oxide with fatty acids having from 12 to 22 carbon atoms and with alkylphenols having from 8 to 15 carbon atoms in the alkyl group. Fatty alcohol polyglycol ethers such as laureth-n, ceteareth-n, steareth-n, oleth-n. Fatty acid polyglycol ethers such as PEG-n-stearate, PEG-n-oleate, PEG-n-cocoate. Monoglycerides and polyol esters. C12-C22 fatty acid mono- and dl-esters of addition products of from 1 to 30 mol of ethylene oxide with polyols. Fatty acid and polyglycerol esters such as glycerol monostearate, diisostearoyi polyglyceryl-3-diisostearates, polyglyceryl-3-diisostearates. triglyceryl diisostearates, polyglyceryl-2-sesquiisostearates or polyglyceryl dimerates. Mixtures of compounds from a plurality of those substance classes are also suitable. Fatty acid polyglycol esters such as diethylene glycol monostearate, fatty acid and polyethylene glycol esters, fatty acid and saccharose esters such as sucrose esters, glycerol and saccharose esters such as sucrose glycerides. Sorbitol and sorbitan, sorbitan mono- and di-esters of saturated and unsaturated fatty acids having from 6 to 22 carbon atoms and ethylene oxide addition products. Polysorbate-n series, sorbitan esters such as sesquiisostearate, sorbitan, PEG-(6)-sorbitan isostearate, PEG-(10)-sorbitan laurate, PEG-17-sorbitan dioleate. Glucose derivatives, C8-C22alkyl-mono and oligo-glycosides and ethoxylated analogues with glucose being preferred as the sugar component, OW emuisifiers such as methyl gIuceth-20 sesquistearate. sorbitan stearate/sucrose cocoate, methyl glucose sesquistearate, cetearyl alcohol/cetearyl glucoside. W/0 emuisifiers such as methyl glucose dioleate/methyl glucose isostearate. Sulfates and sulfonated derivatives, dialkylsulfosuccinates, dioctyl succinate, alkyl lauryl sulfonate, linear sulfonated paraffins, sulfonated tetrapropylene sulfonate, sodium lauryl sulfates, ammonium and ethanolamine lauryl sulfates, lauryl ether sulfates, sodium laureth sulfates, sulfosuccinates, acetyl isothionates, alkanolamide sulfates, taurines, methyl taurines, imidazole sulfates. Amine derivatives, amine salts, ethoxylated amines, oxiy amines with chains containing a heterocycle, such as alkyl imidazolines, pyridine derivatives, isoquinolines, cetylpyridinium chloride, cetylpyridinium bromide, quaternary ammonium such as cetyltrimethylammonium bromide (CTBA), stearylalkonium. Amide derivatives, alkanolamides such as acylamide DEA, ethoxylated amides such as PEG-n acylamide, oxydiamides. Polysiloxane/polyalkyl/polyether copolymers and derivatives, dimethicone, copolyols, silicone polyethylene oxide copolymer, silicone glycol copolymer, Propoxylated or POE-n ethers (Meroxapols), Polaxamers or poly(oxyethylene)m-block-poly(oxypropylene)n-block(oxyethylene). Zwitterionic surfactants that carry at least one quaternary ammonium group and at least one carboxylate and/or sulfonate group in the molecule, Zwitterionic surfactants that are especially suitable are betaines, such as N-alky!-N,N-dimethylammonium glycinates, cocoalkyldimethylammonium glycinate, N-acylaminopropyl-N,N-dimethyl-ammonium glycinates, cocoacylaminopropyldimethylammonium glycinate and 2-alkyl-3" carboxymethyl-3-hydroxyethylimidazoIines each having from 8 to 18 carbon atoms in the alkyl or acyl group and also cocoacylaminoethylhydroxyethylcarboxymethylglycinate, N-alkylbetaine, N-alkylaminobetaines. Alkylimidazolines, alkyl peptides, lipoamino acids, self-emulsifying bases and the compounds as described in K.F.DePolo, A short textbook of cosmetology, Chapter 8, Table 8-7, p250-251. Non-ionic emuisifiers such as PEG-6 beeswax (and) PEG-6 stearate (and) polygiyceryl 2-isostearate [Apifac], glyceryl stearate (and) PEG-100 stearate. [Arlacel 165], PEG-5 glyceryl stearate [riatone 983 S], sorbitan oleate (and) polyglyceryl-3 ricinoleate [Arlacel . 1689], sorbitan stearate and sucrose cocoate [Arlatone 2121], glyceryl stearate and laureth-23 [Cerasynth 945], cetearyl alcohol and Ceteth-20 [cetomacrogol wax], cetearyl alcohol and polysorbate 60 and PEG-150 and stearate-20 [polawax GP 200, polawax NF]i cetearyl alcohol and cetearyl polyglucoside [Emulgade PL 1618], cetearyl alcohol and ceteareth-20 [Emulgade 1000NI, Cosmowax], cetearyl alcohol and PEG-40 castor oil [Emulgade F Special], cetearyl alcohol and PEG-40 castor oil and sodium cetearyl sulfate [Emulgade F], stearyl alcohol and steareth-7 and steareth-10 [Emulgator E 2155], cetearyl alcohol and steareth-7 and steareth-10 [emulsifying wax U.S.N.F], glyceryl stearate and PEG-75 stearate [Gelot 64], propylene glycol ceteth-3 acetate [Hetester PCS], propylene glycol Jsoceth-3 acetate [Hetester PHA], cetearyl alcohol and ceteth-12 and oleth-12 [Lanbritol Wax N21], PEG-6 stearate and PEG-32 stearate [Tefose 1500], PEG-6 stearate and ceteth-20 and steareth-20 [Tefose 2000], PEG-6 stearate and ceteth-20 and glyceryl stearate and steareth-20 [Tefose 2561], glyceryl stearate and ceteareth-20 [Teginacid H, C, X]. Anionic emulsifiers such as PEG-2 stearate SE, glyceryl stearate SE [Monelgine, Cutina KD], propylene glycol stearate [Tegin P], cetearyl alcohol and sodium cetearyl sulfate [Lanette N, Cutina LE, Crodacol GP], cetearyl alcohol and sodium lauryl sulfate [Lanette W], trilaneth-4 phosphate and glycol stearate and PEG-2 stearate [Sedefos 75], glyceryl stearate and sodium lauryl sulfate [Teginacid Special]. Cationic acid bases such as cetearyl alcohol and cetrimonium bromide. The emulsifiers may be used in an amount of, for example, from 1 to 30 % by weight, especially from 4 to 20 % by weight and preferably from 5 to 10 % by weight, based on the total weight of the composition. When formulated in OAV emulsions, the preferred amount of such emulsifier systems may constitute 5 % to 20 % of the oil phase. Adiuvants and additives The cosmetic/pharmaceutical preparations, for example creams, gels, lotions, alcoholic and aqueous/alcoholic solutions, emulsions, wax/fat compositions, stick preparations, powders or ointments, may in addition comprise, as further adjuvants and additives, mild surfactants, superfatting agents, consistency regulators, thickeners, polymers, stabilisers, biogenic active ingredients, deodorising active ingredients, anti-dandruff agents, film formers, swelling agents, further UV light-protective factors, antioxidants, hydrotropic agents, presen/atives, insect repellents, self-tanning agents, solubilisers, perfume oils, colorants, bacteria-inhibiting agents and the like. Superfatting agents Substances suitable for use as superfatting agents are, for example, lanolin and lecithin and also polyethoxylated or acrylated lanolin and lecithin derivatives, polyol fatty acid esters, monoglycerides and fatty acid alkanolamides, the latter simultaneously acting as foam stabilisers. Surfactants Examples of suitable mild surfactants, that is to say surfactants especially well tolerated by the skin, include fatty alcohol polyglycol ether sulfates, monoglyceride sulfates, mono- and/or di-aikyi sulfosuccinates, fatty acid isothionates,-fatty acid sarcosinates, fatty acid taurides, fatty acid glutamates, a-olefin sulfonates, ethercarboxylic acids, alkyl oligogiucosides, fatty acid glucamides, alkylamidobetaines and/or protein fatty acid condensation products, the latter preferably being based on wheat proteins. Consistency regulators/thickeners and rheologv modifiers Silicon dioxide, magnesium silicates, aluminium silicates, polysaccharides or derivatives thereof for example hyaluronic acid, xanthan gum, guar-guar, agar-agar, alginates, carragheenan, gellan, pectins, or modified cellulose such as hydroxycellulose, hydroxypropyl methylcellulose. In addition polyacrylates or homopolymers of crosslinked acrylic acids and polyacrylamides, carbomers (Carbopol types 980, 981,1382, ETD 2001, ETD2020, Ultrez 10) or the Salcare range such as Salcare SC80 (steareth-10 allyl ether/acrylate copolymer), Salcare SC81 (acrylate copolymer), Salcare SC91 and Salcare AST (sodium acrylate copolymer/PPG-1 trideceth-6), Sepigel 305 (poIyacrylamide/laureth-7), Simulgel NS and Simulgel EG (hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer), Stabilen 30 (acrylate/vinyl isodecanoate crosspolymer), Pemulen TR-1 (acrylate/C10-C30alkyl acrylate crosspolymer), Luvige! EM (sodium acrylate copolymer), Aculyn 28 (acrylate/beheneth-25 methacrylate copolymer) etc.. Polymers Suitable cationic polymers are, for example, cationic cellulose derivatives, for example a quaternised hydroxymethyl cellulose obtainable under the name Polymer JR 400 from Amerchol, cationic starches, copolymers of diallylammonium salts and acrylamides, quaternised vinylpyrrolidone/vinyl imidazole polymers, for example Luviquat® (BASF), condensation products of polyglycols and amines, quaternised collagen polypeptides, for example lauryldimonium hydroxypropyl hydrolysed collagen (Lamequat®L/Grunau), quaternised wheat polypeptides, polyethyleneimine, cationic silicone polymers, for example amidomethicones. copolymers of adipic acid and dimethylaminohydroxypropyl diethylene-triamine (Cartaretin/Sandoz), copolymers of acrylic acid with dimethyldiallylammonium chloride (Merquat 550/Chemviron), polyaminopolyamides. as described, for example, in FR-A-2 252 840, and the crosslinked water-soluble polymers thereof, cationic chitin derivatives, for example of quaternised chitosan, optionally distributed as microcrystals; condensation products of dihaloalkyls, for example dibromobutane, with bisdialkylamines, for example bisdimethylamino-1,3-propane, cationic guar gum, for example Jaguar C-17, Jaguar C-16 from Celanese, quaternised ammonium salt polymers, for example Mirapol A-15, Mirapol AD-1, Mirapol AZ-1 from MiranoL As anionic, zwitterionic, amphoteric and non-ionic polymers theR6 come into consideration, for example, vinyl acetate/crotonic acid copolymers, vinylpyrrolidone/vinyl acrylate copolymers, vinyl acetate/butyl maleate/isobornyl acrylate copolymers, methyl vinyl ether/maleic anhydride copolymers and esters thereof, uncross-linked polyacrylic acids and polyacrylic acids crosslinked with polyols, acrylamidopropyl-trimethylammonium chloride/acrylate copolymers, octyl acrylamide/methyi methacrylate-tert-butylaminoethyl methacrylate/2-hydroxypropyl methacrylate copolymers, polyvinyl¬pyrrolidone, vinylpyrrolidone/vinyl acetate copolymers, vinylpyrrolidone/dimethylaminoethyl methacrylate/vinyl caprolactam terpolymers and also optionally derivatised cellulose ethers and silicones. Furthermore, the polymers as described in EP 1 093 796 (pages 3-8. paragraphs 17-68) may be used. Biogenic active ingredients Biogenic active ingredients are to be understood as meaning, for example, tocopherol, tocopherol acetate, tocopherol palmitate, ascorbic acid, deoxyribonucleic acid, retinol. bisabolol, allantoin, phytantriol, panthenol, AHA acids, amino acids, ceramides, pseudoceramides, essential oils, plant extracts and vitamin complexes. Deodorising active ingredients As deodorising active ingredients theR6 come into consideration, for example, anti-perspirants, for example aluminium chlorohydrates (see J. Soc. Cosm. Chem. 24, 281 (1973)). Under the trade mark Locron® of Hoechst AG, Frankfurt (FRG), theR6 is available commercially, for example, an aluminium chlorohydrate corresponding to formula Al2(OH)5CI X 2.5 H2O, the use of which is especially preferred (see J. Pharm. Pharmacol. 26, 531 (1975)), Besides the chlorohydrates, it is also possible to use aluminium hydroxy-acetates and acidic aluminium/zirconium salts. Esterase inhibitors may be added as further deodorising active ingredients. Such inhibitors are preferably trialkyi citrates, such as trimethyl citrate, tripropyl citrate, triisopropyl citrate, tributyl citrate and especially triethyl citrate (Hydagen CAT, Henkel), which inhibit enzyme activity and hence reduce odour formation. Further substances that come into consideration as esterase inhibitors are sterol sulfates or phosphates, for example lanosterol, cholesterol, campesterol, stigmasterol and sitosterol sulfate or phosphate, dicarboxylic acids and esters thereof, for example glutaric acid, glutaric acid monoethyl ester, glutaric acid diethyl ester, adipic acid, adipic acid monoethyl ester, adipic acid diethyl ester, malonic acid and malonic acid diethyl ester and hydroxycarboxylic acids and esters thereof, for example citric acid, malic acid, tartaric acid or tartaric acid diethyl ester. Antibacterial active ingredients that influence the germ flora and kill or inhibit the growth of sweat-decomposing bacteria can likewise be present in the preparations (especially in stick preparations). Examples include chitosan, phenoxyethanol and chlorhexidine gluconate. 5-chloro-2-(2,4-dichlorophenoxy)-phenol (Triclosan, Irgasan, Ciba Specialty Chemicals Inc.) has also proved especially effective. Anti-dandruff agents As anti-dandruff agents theR6 may be used, for example, dimbazole, octopirox and zinc pyrithione. Film formers Customary film formers include, for example, chitosan, microcrystalline chitosan, quaternised chitosan, polyvinylpyrrolidone, vinylpyrrolidone/vinyl acetate copolymers, polymers of quaternary cellulose derivatives containing a high proportion of acrylic acid, collagen, hyaluronic acid and salts thereof and similar compounds. Antioxidants In addition to the primary light-protective substances it is also possible to use secondary light-protective substances of the antioxidant kind that interrupt the photochemical reaction chain triggered when UV radiation penetrates the skin or hair. Typical examples of such anti¬oxidants are amino acids (e.g. glycine, histidine. tyrosine, tryptophan) and derivatives thereof, imidazoles (e.g. urocanic acid) and derivatives thereof, peptides, such as D,L-carnosine, D-carnosine, L-carnosine and derivatives thereof (e.g. anserine), carotinoids, carotenes, lycopene and derivatives thereof, chlorogenic acid and derivatives thereof, lipoic acid and derivatives thereof (e.g. dihydrolipoic acid), aurothioglycose, propylthiouracil and other thiols (e.g. thioredoxin, glutathione, cysteine, cystine, cystamine and the glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl, lauryl, palmitoyi, oleyl. linoleyl, cholesteryl and glyceryl esters thereof) and also salts thereof, dilauryl thiodipropionate, distearyl thiodipropionate, thiodipropionic acid and derivatives thereof (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) and also sulfoximine compounds (e.g. buthionine sulfoximines, homocysteine sulfoximine, buthionine sulfones, penta-, hexa-, hepta-thionine sulfoximine), also (metal) chelating agents (e.g. hydroxy fatty acids, palmitic acid, phytic acid, lactoferrin), hydroxy acids (e.g. citric acid, lactic acid, malic acid), humic acid, bile acid, bile extracts, bilirubin, biliverdin, EDTA, EDDS, EGTA and derivatives thereof, unsaturated fatty acids and derivatives thereof (e.g. linolenic acid, linoleic acid, oleic acid), folic acid and derivatives thereof, ubiquinone and ubiquinol and derivatives thereof, vitamin C and derivatives (e.g. ascorbyl palmitate, magnesium ascorbyl phosphate, ascorbyl acetate), tocopherols and derivatives (e.g. vitamin E acetate), vitamin A and derivatives (e.g. vitamin A palmitate) and also coniferyl benzoate of benzoin resin, rutinic acid and derivatives thereof, glycosylrutin, ferulic acid, furfurylidene glucitol, carnosine, butyl hydroxytoluene, butyl hydroxyanisole, nordihydroguaiaretic acid, trihydroxybutyrophenone, uric acid and derivatives thereof, mannose and derivatives thereof, superoxide dismutase, N-[3-(3,5-di-tert-butyl-4"hydroxyphenyl)propionyl]sulfanilic acid (and salts thereof, for example the disodium salts), zinc and derivatives thereof (e.g. ZnO, ZnS04), selenium and derivatives thereof (e.g. selenium methionine), stilbene and derivatives thereof (e.g. stiibene oxide, trans-stilbene oxide) and the derivatives suitable according to the invention (salts, esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids) of those mentioned active ingredients. HALS (="Hindered Amine Light Stabilizers") compounds may also be mentioned. Further synthetic and natural antioxidants are listed e.g. in patent WO 0025731: structures 1-3 (page 2), structuR6 4 (page 6), structures 5-6 (page 7) and compounds 7-33 (page 8-14). The amount of antioxidants present is usually from 0.001 to 30 % by weight, preferably from 0.01 to 3 % by weight, based on the weight of the UV absorber of formula (1). Hvdrotropic agents To improve the flow behaviour it is also possible to employ hydrotropic agents, for example ethoxylated or non ethoxylated mono-alcohols, diols or polyols with a low number of carbon atoms or their ethers (e.g. ethanol, isopropanol, 1,2-dipropanediol, propylene glycol, glycerol, ethylene glycol, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether; diethylene glycol monoethyl ether, diethylene glycol monobutyl ether and similar products). The polyols that come into consideration for that purpose have preferably from 2 to 15 carbon atoms and at least two hydroxy groups. The polyols may also contain further functional groups, especially amino groups, and/or may be modified with nitrogen. Typical examples are as follows: glycerol, alkylene glycols, for example ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, hexylene glycol and also polyethylene glycols having an average molecular weight of from 100 to 1000 Dalton; technical-grade oligoglycerol mixtures having an intrinsic degree of condensation of from 1,5 to 10, for example technical-grade diglycerol mixtures having a diglycerol content of from 40 to 50 % by weight; methylol compounds, such as, especially, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol and dipentaerythritol; lower alkyl-glucosides, especially those having from 1 to 8 carbon atoms in the alkyl radical, for example methyl and butyl glucoside; sugar alcohols having from 5 to 12 carbon atoms, for example sorbitol or mannitol; sugars having from 5 to 12 carbon atoms, for example glucose or saccharose; amino sugars, for example glucamine; dialcohol amines, such as diethanol-amine or 2-amino-1,3-propanediol. Preservatives and bacteria-inhibiting agents Suitable preservatives include, for example, methyl, ethyl, propyl and butyl parabens, benzalkonium chloride, 2-bromo-2-nitro-propane-1,3-diol, dehydroacetic acid, diazolidinyl urea, 2-dichloro-benzyl alcohol, Dfs/IDM hydantoin, formaldehyde solution, methyldibromo-glutanitrile, phenoxyethanol, sodium hydroxymethylglycinate, imidazolidinyl urea, triclosan and further substance classes listed in the following reference: K.F.DePolo - A short textbook of cosmetology, Chapter 7, Table 7-2. 7-3. 7-4 and 7-5. p210-219. Bacteria-inhibiting agents Typical examples of bacteria-inhibiting agents are preservatives that have a specific action against gram-positive bacteria, such as 2.4,4*-trichloro-2'-hydroxydiphenyl ether, chlor-hexidine (1.6-di(4-chlorophenyl-biguanido)hexane) orTCC (3,4,4'-tnch!orocarbanilide). A large number of aromatic substances and ethereal oils also have antimicrobial properties. Typical examples are the active ingredients eugenol. menthol and thymol in clove oil, mint oil and thyme oil. A natural deodorising agent of interest is the terpene alcohol farnesol (3.7.11-trimethyl-2.6,10-dodecatrien-1-ol). which is present in lime blossom oil. Glycerol monolaurate has also proved to be a bacteriostatic agent. The amount of the additional bacteria-inhibiting agents present is usually from 0.1 to 2 % by weight, based on the solids content of the preparations. Perfume oils TheR6 may be mentioned as perfume oils mixtures of natural and/or synthetic aromatic substances. Natural aromatic substances are. for example, extracts from blossom (lilies, lavender, roses, jasmine, neroli, ylang-ylang). from stems and leaves (geranium, patchouli, petitgrain), from fruit (aniseed, coriander, carraway, juniper), from fruit peel (bergamot, lemons, oranges), from roots (mace, angelica, celery, cardamom, costus, iris, calmus), from .wood (pinewood. sandalwood, guaiacum wood, cedarwood, rosewood), from herbs and grasses (tarragon, lemon grass, sage, thyme), from needles and twigs (spruce, pine. Scots pine, mountain pine), from resins and balsams (galbanum, elemi. benzoin, myrrh, olibanum, opoponax). Animal raw materials also come into consideration, for example civet and castoreum. Typical synthetic aromatic substances are. for example, products of the ester, ether, aldehyde, ketone, alcohol or hydrocarbon type. Aromatic substance compounds of the ester type are, for example, benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethylmethylphenyl glycinate. allylcyclohexyl propionate, styrallyl propionate and benzyl salicylate. The ethers include, for example, benzyl ethyl ether, the aldehydes include, for example, the linear alkanals having from 8 to 18 hydrocarbon atoms, citral, citronellal. citronellyl oxyacetaldehyde, cyclamen aldehyde, hydroxycitronellal. lilial and bourgeonal; the ketones include, for example, the ionones, isomethyllonone and methyl cedryl ketone; the alcohols include, for example, anethol, citronellol, eugenol. isoeugenol, geraniol, linalool, phenyl ethyl alcohol and terpinol; and the hydrocarbons include mainly the terpenes and balsams. It is preferable, however, to use mixtures of various aromatic substances that together produce an attractive scent. Ethereal oils of relatively low volatility, which are chiefly used as aroma components, are also suitable as perfume oils, e.g. sage oil, camomile oil, clove oil. melissa oil, oil of cinnamon leaves, lime blossom oil, juniper berry oil, vetiver oil, olibanum oil, galbanumoil, labdanum oil and lavandin oil. Preference is given to the use of bergamot oil, dihydromyrcenol, lilial, lyral, citronellol, phenyl ethyl alcohol, hexyl cinnamaldehyde, geraniol, benzyl acetone, cyclamen aldehyde, linalool, boisambrene forte, ambroxan, indole, hedione, sandelice, lemon oil, tangerine oil, orange oil, allyl amy! glycolate, cyclovertal, lavandin oil, muscatel sage oil, damascene, bourbon geranium oil, cyclohexyl salicylate, vertofix coeur, iso-E-Super, Fixolide NP, evernyl, iraldein gamma, phenylacetic acid, geranyl acetate, benzyl acetate, rose oxide, romillat, irotyl and floramat alone or in admixtuR6 with one another. Colorants TheR6 may be used as colorants the substances that are suitable and permitted for cosmetic purposes, as compiled, for example, in the publication "Kosmetische Farbemittel" of the Farbstoffkommission der Deutschen Forschungsgemeinschaft, Verlag Chemie, Weinheim, 1984, pages 81 to 106. The colorants are usually used in concentrations of from 0.001 to 0.1 % by weight, based on the total mixture. Other adjuvants It is furthermoR6 possible for the cosmetic preparations to comprise, as adjuvants, anti-foams, such as silicones, structurants, such as maleic acid, solubilisers, such as ethylene glycol, propylene glycol, glycerol or diethylene glycol, opacifiers, such as latex, styrene/PVP or styrene/acrylamide copolymers, complexing agents, such as EDTA, NTA, alaninediacetic acid or phosphonic acids, propellants. such as propane/butane mixtures, N2O, dimethyl ether, CO2, N2 or air, so-called coupler and developer components as oxidation dye precursors, reducing agents, such as thioglycolic acid and derivatives thereof, thiolactic acid, cysteamine, thiomalic acid or mercaptoethanesulfonic acid, or oxidising agents, such as hydrogen peroxide, potassium bromate or sodium bromate. Suitable insect repellents are, for example, N,N-diethyl-m-toluamide, 1,2-pentanediol or insect repellent 3535; suitable self-tanning agents are, for example, dihydroxyacetone and/or erythrulose or dihydroxy acetone and/or dihydroxy acetone precursors as described in WO 01/85124 and/or erythrulose. Polymeric beads or hollow spheres as SPF enhancers The combination of the UV-absorbers and UV-absorber combinations, listed above, with SPF enhancers, such as non-active ingredients like styrene/acrylate copolymers, silica beads, spheroidal magnesium silicate, crosslinked polymethylmethacrylates (PMMA; Micopearl M305 Seppic), can maximize the UV protection of the sun products. Hollow-spheR6 additives (Sunspheres® ISP, Silica Shells Kobo.) deflect radiation and the effective path length of the photon is therefoR6 increased (EP 0 893 119). Some beads, as mentioned previously, provide a soft feel during spreading. Moreover, the optical activity of such beads, e.g. Micropearl M305, can modulate skin-shine by eliminating reflection phenomena and may indirectly scatter the UV light. Cosmetic or pharmaceutical preparations Cosmetic or pharmaceutical formulations are contained in a wide variety of cosmetic preparations. TheR6 come into consideration, for example, especially the following preparations: skin-care preparations, e.g. skin-washing and cleansing preparations in the form of tablet-form or liquid soaps, soapless detergents or washing pastes; bath preparations, e.g. liquid (foam baths, milks, shower preparations) or solid bath preparations, e.g. bath cubes and bath salts; skin-care preparations, e.g. skin emulsions, multi-emulsions or skin oils; cosmetic personal care preparations, e.g. facial make-up in the form of day creams or powder creams, face powder (loose or pressed), rouge or cream make-up, eye-care preparations, e.g. eyeshadow preparations, mascara, eyeliner, eye creams or eye-fix creams; lip-care preparations, e.g. lipsticks, lip gloss, lip contour pencils, nail-care preparations, such as nail varnish, nail varnish removers, nail hardeners or cuticle removers; foot-care preparations, e.g. foot baths, foot powders, foot creams or foot balsams, special deodorants and antiperspirants or callus-removing preparations; light-protective preparations, such as sun milks, lotions, creams or oils, sunblocks or tropicals, pre-tanning preparations or after-sun preparations; skin-tanning preparations, e.g. self-tanning creams; depigmenting preparations, e.g. preparations for bleaching the skin or skin-lightening preparations; insect-repellents, e.g. insect-repellent oils, lotions, sprays or sticks; deodorants, such as deodorant sprays, pump-action sprays, deodorant gels, sticks or roll-ons; antiperspirants, e.g. antiperspirant sticks, creams or roll-ons; preparations for cleansing and caring for blemished skin, e.g. synthetic detergents (solid or liquid), peeling or scrub preparations or peeling masks; hair-removal preparations in chemical form (depilation), e.g. hair-removing powders, liquid hair-removing preparations, cream- or paste-form hair-removing preparations, hair-removing preparations in gel form or aerosol foams; shaving preparations, e.g. shaving soap, foaming shaving creams, non-foaming shaving creams, foams and gels, preshave preparations for dry shaving, aftershaves or aftershave lotions; fragrance preparations, e.g. fragrances (eau de Cologne, eau de toilette, eau de parfum, parfum de toilette, perfume), perfume oils or perfume creams; cosmetic hair-treatment preparations, e.g. hair-washing preparations in the form of shampoos and conditioners, hair-care preparations, e.g. pretreatment preparations, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-structuring preparations, e.g. hair-waving preparations for permanent waves (hot wave, mild wave, cold wave), hair-straightening preparations, liquid hair-setting preparations, hair foams, hairsprays, bleaching preparations, e.g. hydrogen peroxide solutions, lightening shampoos, bleaching creams, bleaching powders, bleaching pastes or oils, temporary, semi-permanent or permanent hair colourants, preparations containing self-oxidising dyes, or natural hair colourants, such as henna or camomile. Presentation forms The final formulations listed may exist in a wide variety of presentation forms, for example: in the fomi of liquid preparations as a W/0, 0/W, 0/W/O, W/O/W or PIT emulsion and all kinds of microemulsions, in the form of a gel. in the form of an oil, a cream, milk or lotion, in the fonn of a powder, a lacquer, a tablet or make-up, in the form of a stick, in the form of .a spray (spray with propellent gas or pump-action spray) or an aerosol, in the form of a foam, or in the form of a paste. Of special importance as cosmetic preparations for the skin are light-protective preparations, such as sun milks, lotions, creams, oils, sunblocks or tropicals, pretanning preparations or after-sun preparations, also skin-tanning preparations, for example self-tanning creams. Of special interest are sun protection creams, sun protection lotions, sun protection milk and sun protection preparations in the form of a spray. Of special importance as cosmetic preparations for the hair are the above-mentioned preparations for hair treatment, especially hair-washing preparations in the form of shampoos, hair conditioners, hair-care preparations, e.g. pretreatment preparations, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-straightening preparations, liquid hair-setting preparations, hair foams and hairsprays. Of special interest are hair-washing preparations in the form of shampoos. A shampoo has, for example, the following composition: from 0.01 to 5 % by weight of a UV absorber according to the invention, 12.0 % by weight of sodium laureth-2-sulfate, 4.0 % by weight of cocamidopropyl betaine, 3.0 % by weight of sodium chloride, and water ad 100%. For example, especially the following hair-cosmetic formulations may be used: ai) spontaneously emulsifying stock formulation, consisting of the UV absorber according to the invention, PEG-6-CioOxoalcohol and sorbitan sesquioleate, to which water and any desired quaternary ammonium compound, for example 4 % minkamidopropyl dimethyl-2-hydroxyethylammonium chloride or Quaternium 80, is added; az) spontaneously emulsifying stock formulation consisting of the UV absorber according to the invention, tributyl citrate and PEG-20-sorbitan monooleate, to which water and any desired quaternary ammonium compound, for example 4 % minkamidoprcpyl dimethyl-2-hydroxyethylammonium chloride or Quaternium 80, is added; b) quat-doped solutions of the UV absorber according to the invention in butyl triglycol and tributyl citrate; c) mixtures or solutions of the UV absorber according to the invention with n-alkylpyrrolidone. Other typical ingredients in such formulations are preservatives, bactericides and bacterio¬static agents, perfumes, dyes, pigments, thickening agents, moisturising agents, humectants, fats, oils, waxes or other typical ingredients of cosmetic and personal care formulations such as alcohols, poly-alcohols, polymers, electrolytes, organic solvents, silicon derivatives, emollients, emulsifiers or emulsifying surfactants, surfactants, dispersing agents, antioxidants, anti-irritants and anti-inflammatory agents etc.. N-(3-Anilino-allylidene)-aniline (4.5 g, 0.02 mol) and cyanoacetic acid 2-ethylhexyl ester (4.2 g, 0.021 mol) are stirred in 10 ml of acetanhydride for 2 hours at 85-90°C. After removing the excess of acetanhydride in vacuo, the reaction batch is poured onto ice, and the resulting precipitate is filtered off and washed with copious amounts of water. After drying in vacuo at 60°C, the intermediate product is taken up in 10 ml of dry ethanol, and diethylamine (3.1 g, 0.042 mol) is added. The reaction mixtuR6 is stirred for 2 hours at 50-55°C. The ethanol and the excess of amine are then distilled off in vacuo. The residue, in a mixtuR6 of toluene and acetone (9.5:0.5), is subjected to fractionated filtration over silica gel 60 from Merck and isolated. The puR6 product is dried under a high vacuum at 60°C. Yield: 4.5 g (73.5 % of theory). N-(3-Anilino-allylidene)-aniline (4.5 g. 0.02 mol) and cyanoacetic acid 2-ethylhexyl ester (4.2 g, 0.021 mol) are stirred in 10 ml of acetanhydride for 2 hours at 85-90°C. After removing the excess of acetanhydride in vacuo, the reaction batch is poured onto ice, and the resulting precipitate is filtered off and washed with copious amounts of water. After drying in vacuo at 60°C, the intermediate product is taken up in 10 ml of dry ethanol, and diethyl-1,3-propanediamine (1.3 g, 0.01 mol) is added. The reaction mixtuR6 is stirred for 2 hours at 50°C. The ethanol is then distilled off, and the residue, in a mixtuR6 of toluene and acetone (9:1), is subjected to fractionated filtration over silica gel 60 from Merck and isolated. The puR6 product is then dried in vacuo at 60°C. Yield: 4.4 g (73% of theory). N-(3-Anilino-allylidene)-aniline (4.5 g, 0.02 mol) and cyanoacetic acid 2-ethylhexyl ester (4.2 g, 0.021 mol) are stirred in 10 m! of acetanhydride for 2 hours at 85-90X. After removing the excess of acetanhydride in vacuo, the reaction batch is poured onto ice, and the resulting precipitate is filtered off and washed with copious amounts of water. After drying In vacuo at 60°C, the intermediate product is taken up in 10 ml of dry ethanol, and piperazine (0.8 g, 0.01 mol) is added. After stirring for 2 hours at 50-55°C, the ethanol is distilled off in vacuo. Subsequent column chromatography over silica gel 60 from Merck using a mixtuR6 of toluene and acetone (9:1) yields the puR6 product, which is dried in vacuo at 60°C. Yield: 3.9 g (69% of theory). Application Examples Example 4: O/W emulsion m UV absorber of formula (101) 3 g sesame oil 10 g glyceryl stearate 4 g stearic acid 1 g cetyl alcohol 0.5 g polysorbate 20 0.2 g (B): propylene glycol 4 g propylparaben 0.05 g methylparaben 0.15 g triethanolamine 0.1 g carbomer 934 0.1 g v/ater ad 100 ml Preparation of the emulsion Phase fA): Firstly, the UV absorber is dissolved in sesame oil. The other components of (A) are added thereto and combined. Phase (B): Propylparaben and methylparaben are dissolved in propylene glycol. 60 ml of water are then added, heating to 70°C is carried out and then carbomer 934 is emulsified therein. Emulsion: (A) is slowly added to (B) with vigorous application of mechanical energy. The volume is adjusted to 100 ml by the addition of water. Example 5: Daily care cream, tvpe 0/W INCI name % w/w (as used) Part A Glyceryl stearate (and) cetearyl alcohol (and) cetyl palmitate (and) cocoglycerides Ceteareth-12 4.0 4.0 Cetearyl alcohol 2.0 Dicaprylyl ether 4.5 Ethylhexyl stearate 4.0 Hexyl laurate 3.5 Ethylhexyl triazone 1.0 * Benzylidene malonate polysiloxane 2.0 HDl/trimethyloi hexyl-Iactone crosspolymer (and) silica 5.0 Stearyl dinnethicone 1.0 Dimethicone 2.0 Cetyl alcohol 0.8 compound of formula (101) 2.0 Parte Water q.s. to 100 Water (and) scleroglucan (and) phenoxyethanol 2.0 Glycerol 2.0 Parte Steareth-10 ally) ether/acrylate copolymer 0.45 Phenoxyethanol (and) methylparaben (and) ethylparaben (and) butylparaben (and) propylparaben (and) isobutylparaben 0.7 INCI name Part D Aqua (and) tocopheryl acetate (and) caprylic/capric triglyceride (and) polysorbate 80 (and) lecithin Part E Water (and) sodium hydroxide Fragrance % w/w (as used) 4.0 q.s. q.s. Preparation procedure: Part A and part B are heated separately to 80°C, Part A is poured into part B, whilst stirring continuously. Afterv/ards the mixtuR6 is homogenized with an Ultra Turrax at 11 000 rpm for 20 sec. The mixtuR6 is cooled to 60°C and part C is added. At a temperatuR6 below 30°C, part D is added and the pH value is adjusted with sodium hydroxide to between 6.5 and 7.0. Finally, fragrance is added. Example 6: Sun-protection cream, type 0/W INCI name Part A Polyglyceryl-3 methylglucose distearate Decyl oleate Isopropyl palmitate Caprylic/capric triglyceride compound of formula (101a) Ethylhexyl methoxycinnamate Cetyl alcohol Part B Glycerol Carbomer Water Part C Phenoxyethanol (and) methylparaben (and) ethylparaben (and) butylparaben (and) propylparaben (and) isobutylparaben Part D Methylene bis-benzotriazolyl tetramethylbutylphenol (and) aqua (and) decyl glucoside (and) propylene glycol (and) xanthan gum Water Part E Water (and)-sodium hydroxide Fragrance % w/w (as used) 2.0 5.7 5.8 6.5 2.0 5.0 0.7 3.0 0.3 q.s. to 100 0.5 8.0 20.0 q.s. q.s. Preparation procedure Part A and part B are heated separately to 75°C, Part A is poured into part B whilst stirring. The mixtuR6 is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. The mixtuR6 is cooled to 60°C and part C and part D are incorporated. The mixtuR6 is homogenised again for a short time (5 sec./11 000 rpm) and further cooled, with moderate stirring. At room temperature, the pH is adjusted with sodium hydroxide solution to between 5.5 and 6.0. Finally, fragrance is added. Example 7: Daily care UV-protection lotion INCI name % w/w (as used) Part A Oleth-3 phosphate 0.6 Steareth-21 2.5 Steareth-2 1.0 Cetyl alcohol 0.8 Stearyl alcohol 1.5 Tribehenin 0.8 Isohexadecane 8.0 compound of formula (101) 5.0 PartB Water q.s. to 100 Glycerol 2.0 Methylene bis-benzotriazolyl tetramethylbutylphenol (and) aqua (and) decyl glucoside (and) propylene glycol (and) xanthan gum DIsodium EDTA 3.0 0.1 Parte Water 20.0 Diazolidinyl urea (and) iodopropynyl butyicarbamate 0.15 Propylene glycol 4.0 PartD Sodium acrylate copolymer (and) liquid paraffin (and) PPG-1 trideceth-6 1.5 Cyclopentasiloxane 4.5 PEG-12dimethicone 2.0 Tocopheryl acetate 0.45 Water (and) citric acid q.s. PartE Fragrance q.s. Preparation procedure Heat part A and part B separately to 75°C. Pour part A into part B. whilst stirring ontinuously. Immediately after emulsification, incorporate in the mixtuR6 SF 1202 and SF 1288 from part D. Afterwards homogenise with an Ultra Turrax at 11 000 rpm for 30 sec. Allow to cool to 65°C and incorporate SALCARE® SC91. At a temperatuR6 below 50°C, add part C. At 35°C or below, incorporate vitamin E acetate and subsequently adjust the pH with citric acid. At room temperature, add part E. % w/w (as used) 2.0 5.7 5.8 6.5 2.0 5.0 0.7 3.0 0.3 q.s. tolOO 0.5 8.0 20.0 q.s. q.s. Example 8: Sun-protection cream, type 0/W INCI name Part A Polyglyceryl-3 methylglucose distearate Decyl oleate Isopropyl palmitate Caprylic/capric triglyceride compound of formula (101) Ethylhexyl methoxycinnamate Cetyl alcohol Part B Glycerol Carbomer Water Part C Phenoxyethanol (and) methylparaben (and) ethylparaben (and) butylparaben (and) propylparaben (and) isobutylparaben Part D Methylene bis-benzotriazolyl tetramethylbutylphenol (and) aqua (and) decyl glucoside (and) propylene glycol (and) xanthan.gum Water Part E Water (and) sodium hydroxide Fragrance Preparation procedure: Part A and part B are heated separately to 75°C. Part A is poured into part B whilst stirring. The mixtuR6 is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. The mixtuR6 is cooled to 60°C, and part C and part D are incorporated. The mixtuR6 is homogenised again for a short time (5 sec./11 000 rpm). After further cooling, with moderate stirring, the pH is adjusted with sodium hydroxide at room temperature. A solution between pH 5.50 and 6.00 is obtained. Finally, fragrance is added. Example 9: Sun-protection cream, type O/W INCI name % w/w (as used) Part A Polyglyceryl-3 methylglucose distearate 2.0 Decyl oleate 5.7 Isopropyl palmitate 5.8 Caprylic/capric triglyceride ^ 6.5 MixtuR6 of the compound of formula (101) (50 %) and Uvinul A 2.0 Plus CAS Reg. No. 302776-68-7 (50 %) Ethylhexyl methoxycinnamate 5.0 Cetyl alcohol 0.7 Part B Glycerol 3.0 Carbomer 0.3 Water q.s, to 100 Part C Phenoxyethanol (and) methylparaben (and) ethylparaben (and) 0.5 butylparaben (and) propylparaben (and) isobutylparaben Part D Methylene bis-benzotriazolyl tetramethylbutylphenol (and) aqua 8.0 (and) decyl glucoside (and) propylene glycol (and) xanthan gum Water 20.0 Part E Water (and) sodium hydroxide q.s. Fragrance q.s. Preparation procedure: Part A and part B are heated separately to 75°C, Part A is poured into part B whilst stirring. The mixtuR6 is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. After cooling 60°C, part C and part D are incorporated. The mixtuR6 is homogenised again for a short time (5 sec./11 000 rpm). After further cooling, with moderate stirring, the pH is adjusted at room temperatuR6 with sodium hydroxide solution to between 5.50 and 6.00. Finally, fragrance is added. Example 10: Sun-protection cream, type 0/W INCI name % w/w (as used) Part A Polyglyceryl-3 methylglucose distearate 2.0 Decyl oleate 5.7 Isopropyl palmitate 5.8 Caprylic/capric triglyceride 6.5 INCI name % w/w (as used'; MixtuR6 of compound of formula (101) (50 %) and fconzylidene 2.0 camphor, CAS Reg. No. 33861-47-9 (50 %) Ethylhexyl methoxycinnamate 5.0 Cetyi alcohol 0.7 Part B Glycerol 3.0 Carbomer 0.3 Water q.s. to 100 Part C Phenoxyethanol (and) methylparaben (and) ethylparaben (and) 0.5 butylparaben (and) propylparaben (and) iscbutylparaben Part D Methylene bis-benzotriazolyl tetramethylbutylphenol (and) aqua 8,0 (and) decyl glucoside (and) propylene glycol (and) xanthan gum Water 20.0 Part E Water (and) sodium hydroxide q.s. Fragrance q.s. Preparation procedure Part A and part B are heated separately to 75°C. Part A is poured into part B whilst stirring. The mixtuR6 is homogenised with an Ultra Turrax at 11 000 rpm for 15 sec. After cooling to 60°C, part C and part D are incorporated. The mixtuR6 is homogenised again for a short time (5 sec./l 1 000 rpm). After further cooling, with moderate stirring, the pH is adjusted at room temperatuR6 with sodium hydroxide, A solution between pH 5.50 and 6,00 is obtained. Finally, fragrance is added. Merocvanine derivatives for cosmetic use The present invention relates to the use of merocyanine derivatives in protecting human and animal hair and skin from UV radiation and to cosmetic compositions comprising such compounds, V wherein R1 and R2 are each independently of the other hydrogen; C1-C22alkyl; cyclo-C3-C8alkyI; or unsubstituted or C1-C6alkyI- or C1-C6alkoxy-substituted C6-C20aryl; or R1 and R2 together with the nitrogen atom linking them form a -(C2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; -CONR1R5; R4 is a cyano group; -COOR6; -CONHR6; -COR6; or -SOaR6; -CONR2R6; R5 and R6 are each independently of the other C1-CaaalkyI; cycIo-C3-C8alkyI; or unsubstituted or C1-C6alkyl-substituted C6-C20aryl; or R3 and R4 together or R5 and R6 together form a 5- to 7-membered, monocyclic, carbo- cyclic or heterocyclic ring; Z1 and Z2 are each independently of the other a -(CH2)r group which is uninterrupted or interrupted by -O-, -S-, or by -NR7-, and/or is unsubstituted or substituted by C1-C6alkyI; R7 is C1-C5alkyI; I is from 1 to 4; m is from 1 to 7; n is from 1 to 4; when n = 2, R1, R5 or R6 is a bivalent alkyl group; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; when n = 3, R1, R5 or R6 is a trivalent alkyl group; We Claim: 1. A composition comprising the compounds of Formula (1), (2) and (3) wherein R1 and R2 are each independently of the other hydrogen; C1-C22alkyI; cyclo-C3-C8alkyI; or unsubstituted or C1-C6alkyI- or C1-C6alkoxy-substituted C6-C20aryl; or R1 and R2 together with the nitrogen atom linking them form a -{CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; -CONR1R5; R4 is a cyano group; -COOR6; -CONHR6; -COR6; or -SO2R6; -CONR2R6; R5 and R6 are each independently of the other Ci-C22alkyl; cyclo-C3-C6alkyl; or unsubstituted or C1-C6alkyl-substituted C6-C20aryl; or R3 and R4 together or R5 and R6 together form a 5- to 7-membered, monocyclic, carbo- cyclic or heterocyclic ring; Z1 and Z2 are each independently of the other a -(CH2)r group which is uninterrupted or interrupted by -O-, -S-, or by -NR7-, and/or is unsubstituted or substituted by C1-C6alkyI; R7 is C1-C5alkyI; I is from 1 to 4; m is from 1 to 7; n is from 1 to 4; when n = 2, R1, R5 or R6 is a bivalent alkyl group; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; when n = 3, R1, R5 or R6 is a trivalent alkyl group; when n = 4, R1, R5 or R6 is a tetravalent alkyl group; and R1 and R2 in formula (1) are not simultaneously hydrogen; In protecting human and animal hair and skin from UV radiation. 2. The composition as claimed in claim 1, relating to a compound of formula (1) or R1 and R2 are each independently of the other hydrogen; C1-C22alkyl; or unsubstituted or C1-C5alkyI- or C1-C5alkoxy-substituted C6-C20aryl; or Ri and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; R4 is a cyano group; -COOR6; -CONHR6; -COR6 or -SOaRei R5 and Re are each Independently of the other Ci-C22alkyl; or unsubstituted or C1-C5alkyl-substituted C6-C20aryl; or R5 and R6 together form a 5- to 7-membered, monocyclic, carbocyclic or heterocyclic ring; Z1 and Z2 are each independently of the other a "(CH2)i- group which is uninterrupted or interrupted by -O-, -S-, or by -NR/-, and/or is unsusbstituted or substituted by C1-C5alkyI; R7 is C1-C5 alkyl; I is from 1 to 4; m is from 1 to 7; n is from 1 to 4; when n = 2, Ri, R5 or Re is a bivalent alkyl group; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; when n = 3, R1, R5 or Re is a trivalent alkyl group; when n = 4, R1, R5 or Re is a tetravalent alkyl group; and R1 and R2 in formula (1) are not simultaneously hydrogen. 3. The composition as claimed in claim 1 or claim 2, wherein Ri and R2 are each independently of the other Ci-C22alkyl; or Ri and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; R4 is a cyano group; -COOR6; -CONHR6; -COR6; or -SO2R6; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl; and Z is as defined in claim 1. 4. The composition as claimed in any one of claims 1 to 3, wherein R3 is a cyano group; and R4 is -CONHR6; and Re is C1-C22alkyl; or C6-C20aryl. 5. The composition as claimed in any one of claims 1 to 4, wherein R6 is C4-C20alkyl. 6. The composition as claimed in any one of claims 1 to 3, wherein R1 and R2 are each independently of the other C1-C22aIkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O" or by -NH-; R3 is-COORs; R4 is a cyano group; -COOR6; or -SO2R6; R5 and Re are each independently of the other C1-C22alkyI; or C6-C20aryl; and m is from 1 to 7. 7. The composition as claimed in claim 6, wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COOR5; R4 is-COOR6; R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl; and m is from 1 to 7. 8. The composition as claimed in claim 6, wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COORs; R4 is a cyano group; R5 is C1-C22alkyl; or C6-C20aryl; and m is from 1 to 7. 9. The composition as claimed in claim 6, wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O- or by -NH-; R3 is-COOR5; R4 IS-SO2R6; R5 and R6 are each independently of the other Ci-C22alkyl; or C6-C20aryl; and m is from 1 to 7. 10. The composition as claimed in either claim 1 or claim 2, which comprises using a compound of formula wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; X is-O-;or-NH-; Z2 a -(CH2)r group which is uninterrupted or interrupted by -O-, -S-, or by -NR7-, and/or is unsubstituted or substituted by C1-C6alkyI; and n is from 1 to 3. 11. The composition as claimed in claim 10, wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the 12. The composition as claimed in claim 1, which comprises using a compound of formula R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O-or by-NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; and R5 and R6 are each independently of the other C1-C22alkyl; or C6-C20aryl. 13. The composition as claimed in claim 12, wherein R1 and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the Ri and R2 are each independently of the other C1-C22alkyl; or R1 and R2 together with the nitrogen atom linking them form a -(CH2)m- ring which is uninterrupted or interrupted by -O-or by-NH-; R3 is a cyano group; -COOR5; -CONHR5; -COR5; or -SO2R5; and R5 is C1-C22alkyl; or C6-C20aryl. 16. Use according to any one of claims 1 to 15, wherein Z1 or Z2 is an atom grouping which results in the formation of an oxazolidine ring, a pyrrolidine ring or a thiazolidine ring. 17. The composition as claimed in one of claim 16, wherein it corresponds to formula R8 and R9 are each Independently of the other hydrogen; or C1-C5alkyI; and Y is -O -S-; Oder -CH2-; and Ri, R3, R4 and n are as defined in claim 1. 18. The composition as claimed in claim 17, wherein R1 is C1-C12alkyI; R3 is a cyano group; -COOR5; -COR5; or -SO2R5; R4 is-COR6; or-COOR6; R5 and R6 are each independently of the other unsubstituted or C1-C5alkyI- or C1-C5alkoxy-substituted C6-C20aryl. R1 is C1-C4alkylene; R2 is C1-CsalkyI; or R1 and R2 together with the 2 nitrogen atoms linking them form a -(CH2)m- ring; R5 is C1-C22alkyl; m is from 1 to 7. 20. The use of a compound substantially as herein described and exemplified. 21. A cosmetic preparation substantially as herein described and exemplified.

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