Patent ID: 7244439

Claim:
A cosmetic composition comprising: (a) composite particles comprising base particles A and fine particles B, wherein the fine particles B have a mean particle diameter of ⅕ or less of the mean particle diameter of the base particles A and the fine particles B are dispersed on the surface of the base particles A, and wherein particle A and particle B are covered with at least one polymer compound selected from the group consisting of a fluorinated polymer compound, dimethyl siloxane•methyl (polyoxyethylene) siloxane copolymer, dimethyl siloxane methyl (polyoxypropylene) siloxane copolymer, polyether-modified silicone, methystyryl-modified silicone, alkyl-modified silicone, fluorine-modified silicone, a higher fatty acid ester-modified silicone, higher alcohol-modified silicone, silicone-modified acrylic resin and a silicone polymer compound including poly(N-acylalkyleneimine) molecular chains having repeating units represented by the formula (III): (in the formula, R 3 represents a hydrogen atom, an alkyl group with a carbon number of 1 to 22, a cyloalkyl group with a carbon number of 3 to 8, an aralkyl group with a carbon number of 7 to 10, or an aryl group with a carbon number of 6 to 10, and n represents 2 or 3), bonded to the terminals and/or side chains via the groups represented by the formula (I): (in the formula, R 1 and R 2 independently represent a hydrogen atom, an alkyl group with a carbon number of 1 to 18, or an aryl group with a carbon number of 6 to 10, and X − represents a counter-ion of a quaternary ammonium ion such as halo en ions such as Cl − or Br − , or sulfonic acid ester ions such as CH 3 SO 4 − and CH 3 CH 2 SO 4 − ), or represented by the formula (II): (in the formula, R 1 , R 2 and X − represent the same meanings, as described above), said composite particles being obtainable by allowing at least two kinds of particles having different shapes and particle diameters including particles A and B to contact the at least one polymer compound in the presence of supercritical carbon dioxide, and (b) a cosmetic component.