| abstract |
ABSTRACT DESCRIPTION The invention relates to a cosmetic composition. for the protection of the skin and hair against UV rays comprising, in a cosmetically support acceptable, at least one hydroxy-2-chalcone derivative of formula: (I) in which R1, R2, R3 and R4 independently denote from each other a hydrogen atom, an alkyl group C1 to C12 straight or branched chain, one alkoxy group C1 to C12 with straight or branched chain or an acyloxy group in C2 to C20 with straight or branched chain. The invention aims also as new compounds some of the derivatives of 2-hydroxy chalcone of formula (I), as well as their process of preparation. The compounds of formula (I) have good filtering properties vis-à-vis ultra-rays purple, an excellent fat-soluble character as well as very good thermal and photochemical stability. |