PROBLEM TO BE SOLVED: To provide a composite powder of APM (ascorbic acid phosphoric acid ester magnesium) which is easy to dissolve directly from a state of the powder into a small amount of water even when contained in a powder cosmetic as the powder state, does not cause an aggregate on a cosmetic surface when continuously used, and also does not cause degradation of smoothness at the time of applying.SOLUTION: A composite powder constituted of spherical particles each having a core-shell structure composed of synthetic smectite, ascorbic acid phosphoric acid ester magnesium, and silica-coated particulate titanium oxide, as components, is prepared. Particularly, the composite powder constituted of the spherical particles each having the core-shell structure in which silica-coated particulate titanium oxide exists in an outer shell part, exhibits satisfactory smoothness at the time of applying.COPYRIGHT: (C)2015,JPO&INPIT【課題】粉末化粧料中へ粉体のまま配合しても、APMが粉体状態からでも少量の水分中へ溶解しやすく、しかも、継続的な使用時には化粧料表面に凝集物を発生させず、塗布時の滑らかさも損なわせないAPMの複合粉体を提供すること。【解決手段】構成成分として、合成スメクタイト、リン酸L-アスコルビルマグネシウム、シリカ被覆微粒子酸化チタンから成るコアシェル構造の球状複合粉体を調製する。特には外殻部にシリカ被覆微粒子酸化チタンが存在するコアシェル構造の球状複合粉体が良好な塗布時の滑らかさを示す。【選択図】図3
