Water resistant UV-protective cosmetic/dermatological compositions containing bis-resorcinyltriazine derivatives also contain organosiloxane elastomer powder coated with a trimethylsiloxysilicate or derivative

Trimethylsiloxysilicates or their derivatives are used as coatings for organosiloxane elastomer powders used with bis-resorcinyltriazine derivatives in UV-protective cosmetic and/or dermatological compositions. UV-protective cosmetic and/or dermatological compositions containing: (A) bis-resorcinyltriazine derivatives of formula (1); and (B) a coated powder with a siloxane elastomer core obtained by reaction of either: (i) vinyl-terminated polymethylsiloxanes and methylhydrodimethylsiloxanes; or (ii) OH-terminated dimethylpolysiloxanes and trimethylsiloxy-terminated methylpolysiloxanes. The composition is such that the coating is of a trimethylsiloxysilicate and/or its derivatives. R - R = 1-10C alkyl or H. Kosmetische und/oder dermatologische Zubereitung zum Schutz vor UV-Strahlung mit Bis-Resorcinyltriazinderivaten und beschichteten Pulvern, bestehend aus einem Kern aus mindestens einem Siloxanelastomeren und einer Beschichtung aus einem Trimethylsiloxysilikat und/oder dessen Derivat.