| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composite pigment having an excellent discoloration- preventing effect, a high dispersing property, a light weight, a smooth touch and a high UV light-shielding effect by applying a specific amount of silica on the surfaces of titanium dioxide particles. SOLUTION: This composite pigment is obtained by applying 15-50 wt.% of silica on the surfaces of titanium dioxide particles. The titanium dioxide particles constituting the pigment preferably have an average particle diameter of 0.01-0.2μm. When the amount of the silica applied on the titanium dioxide particles is <15 wt.%, the discoloration-preventing effect of the titanium dioxide is low, and the high dispersing property and the smooth touch are not obtained. When the amount of the silica applied on the titanium dioxide particles is >50 wt.%, the UV light-shielding effect is deteriorated, and the objective effect is not obtained. The composite pigment can by processed in the form of a liquid cosmetic, a cream-like cosmetic, an oily solid cosmetic, a pressed solid-like cosmetic, a powdery cosmetic, etc. Although arbitrarily selected in response to the kind of the cosmetic, the amount of the pigment to be added to the cosmetic is preferably 0.5-95 wt.% based on the cosmetic, more preferably 1-50 wt.%.
|
