Use of at least one blue-light screening agent to preserve the amount of endogenous carotenoids in the skin, new blue- light screening agents, cosmetic compositions.

摘要

Blue light filter capable of filtering out light of wavelength 370-500 nm is used to prepare a composition for application to the skin to inhibit degradation of endogenous carotenoids in the skin. Independent claims are also included for: (1) vinylarylamino s-triazine derivatives of formula (III); (2) cosmetic or dermatological composition containing (III). [Image] A 1-A 3groups of formula (IV)-(VIII), at least one being of formula (IV)-(VII), or UVB- and/or UVA-absorbing chromophores, preferably hydroxy- 1-20C alkyl- or 1-20C alkoxy-substituted aryls, amino benzylidene camphors, amino benzotriazoles, 1-20C aminobenzoate, aminobenzalmalonate, aminosalicyliate or aminocinnamate esters or anthranilates, provided that A 1-A 3 are not all the same group of formula (IV) and A 1 is not of formula (VIII) or (IX) when A 2 and A 3 are of formula (IV). [Image] [Image] [Image] -O-Z 1-W 1 (VIII); -NH-Z 2-(W 1) a (IX); R 2 0H, 1-4C alkyl or 1-4C alkoxy; R 1 91-20C alkyl, 2-20C hydroxyalkyl or 1-20C alkoxy; R 2 1H, Me, or phenyl optionally substituted with 1-4C alkyl or 1-4C alkoxy; R 2 21-20C alkyl, or phenyl optionally substituted with 1-4C alkyl or 1-4C alkoxy; Z 1, Z 21-12C alkylene, optionally substituted with OH, optionally containing O atoms or amino groups and optionally containing a double bond; a : 1 or 2; W 1a silicone group comprising at least one Si(R 2 3)O ( 3 - b ) / 2 unit, or SiR 2 4R 2 5R 2 6; R 2 31-10C aliphatic hydrocarbyl, 1-8C halohydrocarbyl, phenyl, 3,3,3-trifluoropropyl or OSiMe 3; b : 1 or 2; R 2 4-R 2 61-8C alkyl or alkenyl.