MEDICINAL HERB EXTRACTS FOR SKIN WHITENING, A METHOD OF MANUFACTURING THE SAME AND SKIN WHITENING COSMETICS CONTAINING THE SAME

摘要

PURPOSE: A crud drug extract for skin whitening and a cosmetic composition containing the same are provided to suppress alpha-glucosidase and tyrosinase activities and to relieve pigmentation on the skin. CONSTITUTION: A method for preparing crude drug extract for skin whitening comprises: a step of adding Euonymi Lignum Suberalatum, alnus japonica (Thunb.) Steud., Chungsimyeonja-eum(kind of oriental medicine) to organic solvent or mixture of organic solvent and water; a step of reflux-condensing, filtering, and concentrating; a step of dissolving the concentrate in mixture liquid of water and ethanol; a step of serially fractioning with dichloromethane, ethyl acetate, and butanol; and a step of decompressing and concentrating. A cosmetic composition for skin whitening contains 0.01-50wt% of crude drug extract.