Vitamin A Acid, Retinoic Acid, Tretinoin, CAS No. : 302-79-4, 99%, Function: Stimulate skin cell growth. Promote cell metabolism and reduce fine lines and wrinkles. Reduce aging pigment content. Restore skin smooth and delicate. Safe ingredient. Please see MSDS of Vitamin A Acid. Application: Dissolved this product in oil phase. Used in anti-acne cosmetics. It maybe has little burning feel in skin. Package: Packing in carton, inner sealed with 1kg*10 or 0.1kg*100 aluminium foil bag.