化粧品用粉体原料の肌面使用感に対する粉砕の影響と可視化

抄録

Powder foundation contains various types of powders such as thin plates, fine pigments and spherical particles. Pulverization processes of the raw materials have significant effects on cosmetic properties of these powders in terms of the feeling on use and appearance of skin. Dry pulverization process by a jet-mill is a simple method to produce talc powder for matte make-up, which makes compact cake hard. In contrast, thin flake mica particles are produced by a wet-pulverization process exerting high shear stress by use of attritor and mass-colloider mills. To visualize the difference in the cosmetic feeling on use when the powder foundations are applied to the skin, we used low-vacuum scanning electron microscope.