Water resistant UV-protective cosmetic/dermatological compositions containing phenylene-bisbenzimidazyl tetrasulfonic acid contain organosiloxane elastomer powder coated with a trimethylsiloxysilicate or derivative

摘要

Trimethylsiloxysilicates or their derivatives are used as coatings for organosiloxane elastomer powders used with phenylene-1,4-bis-(2-benzimidazyl)-3,3',5,5'-tetrasulfonic acid in UV-protective cosmetic and/or dermatological compositions. UV-protective cosmetic and/or dermatological compositions contains: (A) phenylene-1,4-bis-(2-benzimidazyl)-3,3',5,5'-tetrasulfonic acid; 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.