| 摘要 |
PROBLEM TO BE SOLVED: To provide powder regulating pH of the skin surface to weakly acidic, and gentle to the skin. SOLUTION: There is provided the surface-treated powder regulating the pH of the skin to 3.0-5.0. The power is obtained by treating the surface thereof with a resin having carboxylic acid functional group. Furthermore, the resin having carboxylic acid functional group is preferably polyacrylic acid, polymethacrylic acid, polymaleic acid, or a copolymer of acrylic acid and maleic acid, a copolymer of methacrylic acid and maleic acid, a copolymer of acrylic acid and methacrylic acid, and a copolymer of acrylic acid, methacrylic acid and maleic acid. A cosmetic containing the power is provided, and the cosmetic is particularly preferable as a makeup cosmetic. COPYRIGHT: (C)2011,JPO&INPIT
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