Surface-treated powders, and cosmetics comprising the same

摘要

The present invention provides surface-treated powders that are treated with a polymer, and cosmetics that comprise the surface-treated powder. The polymer comprises a monomer (A) represented by the general formula (1) described below as a constituent monomer.
(wherein R 1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 2 represents an alkylene group having 4 to 22 carbon atoms, X 1 represents an -NH- group or an oxygen atom, and M 1 represents a hydrogen atom or a monovalent inorganic or organic cation.)