Disclosed is a powder consisting of particles of a cured fluoro-silicone 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 [R1R2SiO2/2], [R22SiO2/2] and [R23SiO1/2], in which R1 is preferably a 3,3,3-trifluoropropyl group and R2 is preferably a methyl group, in such a proportion that the molar ratio of R1:(R1+R2) 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.