1,Appearance:White powder 2,CAS NO: 497-76-7 ... Leaf Extractfunction of product :Alpha-Arbutin has been used in the treatment of disorders of hyperpigmen tation such as ... postinflammatory hyperpigmentation caused by acne ,trauma,allergic reaction,in fections,injuries,phototoxic reactions,reactions to medications, reactions ... materials, food emulsifier Alpha-Arbutin power used in cosmetic field