| 简介 |
The main theme of the invention is to provide a cosmetic material containing a crystalline superfine silk powder that is provided with the original structure of silk yarn; with properties such as a unique gloss, feeling of touch, flexibility, and elasticity; and with various properties such as excellent coating power, spreadability, adhesion, feeling of touch, and formability, which are required of the extender powder or color material of cosmetics. The cosmetic material contains a colored crystalline superfine silk powder obtained in the steps of bringing a silk substance into contact with an alkali aqueous solution at temperatures ranging from 100 DEG C to 150 DEG C under pressure ranging from 1 through 5 atmospheric pressure to weaken the silk substance to not greater than 0.02g/d in tensile strength; thereafter, dealkalizing and drying the silk substance; then, powdering the silk substance into a crystalline superfine silk powder below 3 mu m in average particle diameter; and thereafter, dyeing the crystalline superfine silk powder with a natural or synthetic color material, or mixing the crystalline superfine silk powder with a natural or synthetic color material. |
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