Cosmetic or pharmaceutical composition comprising a UV filter combination of (a) an aqueous dispersion of 5,6,5',6'-tetraphenyl-3,3'-(1,4-Phenylene)bis(1,2,4-Triazine) corresponding to the formula in particulate form which is present in the micronized state and wherein the average particle size of component (a) is in the range from 0.02 to 2 micrometres; and (b) the UV filters selected from (b 1) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine; (b 2) Butyl Methoxydibenzoylmethane; (b 3) Diethylhexyl Butamido Triazone; (b 4) Ethylhexyl Triazone; (b 5) Diethylamino Hydroxy Benzoyl Hexyl Benzoate; (b 6) Ethylhexyl Methoxycinnamate; (b 7) Ethylhexyl Salicylate; (b 8) Homosalate; (b 9) Octocrylene; (b 10) Methylene Bis-Benzotriazolyl Tetramethylbutylphenol; (b 11) Phenylbenzimidazole Sulfonic Acid; (b 12) Titanium Dioxide; (b 13) Tris-Biphenyl Triazine; and (b 14) (2-{4-[2-(4-Diethylamino-2-hydroxy-benzoyl)-benzoyl]-piperazine-1-carbonyl}-phenyl)-(4-diethylamino-2-hydroxy-phenyl)-methanone; (b 15) BBDAPT; Benzoic acid, 4,4'-[[6-[[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1 disiloxanyl]propyl]amino]-1,3,5-triazine-2,4-diyl]diimino]bis-, dibutyl ester; (b 16) benzylidene malonates; and (b 17) merocyanine derivatives; (b 18) Bis(butylbenzoate) diaminotriazine aminopropylsiloxane; (b 19) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine encapsulated in a polymer matrix; (b 20) 2-(2H-Benzotriazol-2-yl)-6-[(2-ethylhexyloxy)methyl]-4-methylphenol; and (b 21) 2-Propenoic acid, 3-(4-methoxyphenyl)-, 2-methylphenyl ester; wherein said composition contains at least two of the UV filters (b 1) - (b 17); and wherein said composition also contains a pharmaceutically or cosmetically acceptable excipient. (a) an aqueous dispersion of 5,6,5',6'-tetraphenyl-3,3'-(1,4-Phenylene)bis(1,2,4-Triazine) corresponding to the formula in particulate form which is present in the micronized state and wherein the average particle size of component (a) is in the range from 0.02 to 2 micrometres; and (b) the UV filters selected from (b 1) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine; (b 2) Butyl Methoxydibenzoylmethane; (b 3) Diethylhexyl Butamido Triazone; (b 4) Ethylhexyl Triazone; (b 5) Diethylamino Hydroxy Benzoyl Hexyl Benzoate; (b 6) Ethylhexyl Methoxycinnamate; (b 7) Ethylhexyl Salicylate; (b 8) Homosalate; (b 9) Octocrylene; (b 10) Methylene Bis-Benzotriazolyl Tetramethylbutylphenol; (b 11) Phenylbenzimidazole Sulfonic Acid; (b 12) Titanium Dioxide; (b 13) Tris-Biphenyl Triazine; and (b 14) (2-{4-[2-(4-Diethylamino-2-hydroxy-benzoyl)-benzoyl]-piperazine-1-carbonyl}-phenyl)-(4-diethylamino-2-hydroxy-phenyl)-methanone; (b 15) BBDAPT; Benzoic acid, 4,4'-[[6-[[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1 disiloxanyl]propyl]amino]-1,3,5-triazine-2,4-diyl]diimino]bis-, dibutyl ester; (b 16) benzylidene malonates; and (b 17) merocyanine derivatives; (b 18) Bis(butylbenzoate) diaminotriazine aminopropylsiloxane; (b 19) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine encapsulated in a polymer matrix; (b 20) 2-(2H-Benzotriazol-2-yl)-6-[(2-ethylhexyloxy)methyl]-4-methylphenol; and (b 21) 2-Propenoic acid, 3-(4-methoxyphenyl)-, 2-methylphenyl ester; wherein said composition contains at least two of the UV filters (b 1) - (b 17); and wherein said composition also contains a pharmaceutically or cosmetically acceptable excipient. (b 1) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine; (b 2) Butyl Methoxydibenzoylmethane; (b 3) Diethylhexyl Butamido Triazone; (b 4) Ethylhexyl Triazone; (b 5) Diethylamino Hydroxy Benzoyl Hexyl Benzoate; (b 6) Ethylhexyl Methoxycinnamate; (b 7) Ethylhexyl Salicylate; (b 8) Homosalate; (b 9) Octocrylene; (b 10) Methylene Bis-Benzotriazolyl Tetramethylbutylphenol; (b 11) Phenylbenzimidazole Sulfonic Acid; (b 12) Titanium Dioxide; (b 13) Tris-Biphenyl Triazine; and (b 14) (2-{4-[2-(4-Diethylamino-2-hydroxy-benzoyl)-benzoyl]-piperazine-1-carbonyl}-phenyl)-(4-diethylamino-2-hydroxy-phenyl)-methanone; (b 15) BBDAPT; Benzoic acid, 4,4'-[[6-[[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1 disiloxanyl]propyl]amino]-1,3,5-triazine-2,4-diyl]diimino]bis-, dibutyl ester; (b 16) benzylidene malonates; and (b 17) merocyanine derivatives; (b 18) Bis(butylbenzoate) diaminotriazine aminopropylsiloxane; (b 19) Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine encapsulated in a polymer matrix; (b 20) 2-(2H-Benzotriazol-2-yl)-6-[(2-ethylhexyloxy)methyl]-4-methylphenol; and (b 21) 2-Propenoic acid, 3-(4-methoxyphenyl)-, 2-methylphenyl ester;