Particles of cured fluorosilicone rubber and cosmetic preparation containing same

摘要

Disclosed is a powder consisting of particles of a cured fluorosilicone rubber having a specified average particle diameter and a specified rubber hardness. The fluorosilicone rubber has a siloxane composition consisting of three types of units expressed by the unit formulas of ÄR<1>R<2>SiO2/2Ü, ÄR<2>2SiO2/2Ü and ÄR<2>3SiO1/2Ü, in which R<1> is preferably a 3,3,3-trifluoropropyl group and R<2> is preferably a methyl group, in such a proportion that the molar ratio of R<1>:(R<1>+R<2>) is in the range from 0.05 to 0.5. The powder is useful as an ingredient in a cosmetic or toiletry preparation to effect improved sustainability of the cosmetic finish and decreased unevenness of coloring on human skin.