Vitamin E refers to a group of eight fat-soluble compounds that include both tocopherols and tocotrienols. alpha-tocopherol, the most biologically active form of vitamin E, is the second-most common form of vitamin E in the diet.
Tocopheryl acetate, also known as vitamin E acetate, is a common vitamin supplement. It is often used in dermatological products. Tocopheryl acetate is not oxidized and can penetrate through the skin to the living cells, where about 5% is converted to free tocopherol.
Vitamin E has many biological functions, the antioxidant function being the most important. Other functions include enzymatic activities, gene expression, and neurological function(s) and cell signalling