COSMETIC COMPOSITION INCLUDING WATER-SOLUBLE SERICIN FROM SILK-GLAND POWDER OF SILKWORM

摘要

PURPOSE: A cosmetic composition using water soluble sericin which is derived from silkworm grand ultrafine powder is provided to ensure excellent antioxidation, skin cell proliferation ability, and skin affinity. CONSTITUTION: A cosmetic composition contains 0.001-50 wt% of water soluble sericin which is derived from silkworm grand ultrafine powder. A method for preparing sericin comprises: a step of freeze-drying silkworm and isolating silkworm grand; a step of dissolving the silkworm grand in water and centrifuging to collect a supernatant; a step of adding alkali to the supernatant and hydrolyzing; and a step of neutralizing and desalting.