| 摘要 |
PURPOSE:To provide an excellent cosmetic having excellent adhesivity to the skin, resistance to water and ultraviolet-shielding effect and giving natural appearance to the skin, by coating the surface of fine titanium oxide particles with amorphous iron (III) oxyhydroxide and a hydrophobicizing agent and adding the treated particles to a cosmetic base. CONSTITUTION:Fine particles of titanium oxide having a maximum particle diameter of <=0.1mu and an average particle diameter of 0.01-0.06mu (corresponding to the diameter to give high ultraviolet-scattering effect) are coated with (A) an amorphous iron (III) oxyhydroxide produced preferably by the hydrolysis of an iron (III) salt, etc., and (B) a hydrophobicizing agent such as a higher fatty acid, etc., to obtain a hydrophobic composite pigment wherein the segregation of color, the difference between the apparent color and the applied color, and the smoking of the cosmetic are prevented by the presence of the component A, the water-resistance is improved by the component B, and the undesirable effects of the component B such as the lowering of the extensibility and spreadability of the cosmetic and the loss of uniformity of applied cosmetic are suppressed by the component A. A cosmetic having the above effects can be produced by adding the hydrophobic composite pigment to a cosmetic, especially a makeup cosmetic or an antisuntan cosmetic. |
