PURPOSE: A skin whitening composition using litter extract or silkworm extract is provided to suppress melanin generation and tyrosinase. CONSTITUTION: A skin whitening composition contains litter extract or silkworm extract as an active ingredient. The extract is isolated using ethanol, methanol, acetone, ethyl acetate, saturated normal butanol, chloroform, methylene chloride, water, or mixture solvent thereof. The composition is a cosmetic composition or soap composition. A composition for skin moisturizing contains litter extract or silkworm extract as an active ingredient.본 발명은 티로시나아제 억제 활성과 멜라닌 생성 억제 활성을 지니는 잠사 추출물 또는 누에 추출물을 이용한 피부 미백제 조성물을 개시한다.
