Patent ID: 8025867

Claim:
A topically applicable photostabilized cosmetic/dermatological composition comprising at least one dibenzoylmethane compound UV-A screening agent and at least one merocyanine sulfone compound of formula (1), formulated into a topically applicable, cosmetically/dermatologically acceptable support therefor: in which: R 1 and R 2 , which may be identical or different, are each H, a C 1 -C 22 alkyl radical, a C 3 -C 8 cycloalkyl radical, a C 6 -C 20 aryl radical, with the proviso that only one of R 1 , R 2 is H and that R 1 and R 2 may together form, with the nitrogen from which they depend, a cycle containing the —(CH 2 ) m — group, which may be uninterrupted or interrupted by —O— or by —NH—; R 3 is a carboxyl group, —COOR 4 , —CONHR 4 , —COR 4 , —CONR 1 R 4 , —CN or —SO 2 R 4 ; the radicals R 4 , which may be identical or different, are each a C 1 -C 22 alkyl Radical, a C 3 -C 8 cycloalkyl radical or a C 6 -C 20 aryl radical; m is 1-7: n is 1-4; with the provisos that: (i) when n=2, R 1 , R 4 is an alkyl di-radical or R 1 and R 2 together form with 2 nitrogen atoms, a divalent —(CH 2 ) m — radical; (ii) when n=3, R 1 and R 4 are a trivalent radical; (iii) when n=4, R 1 , R 4 are a tetravalent radical; and (iv) R 1 and R 2 are not simultaneously a hydrogen atom.