Skim through

What it does: antioxidant, conditioning

Also called: vitamin E acetate 

The science

Tocopheryl acetate is a stable ingredient with a long shelf life. As an antioxidant, it helps to protect the hair from damaging compounds called free radicals, which cause hair follicles to break down.

Benefits for your hair

Promotes shine

Tocopheryl acetate can help replenish shine that the hair loses as a result of damage caused by chemicals, heat and other styling products.

Promotes hydration

Vitamin E is important for creating a protective barrier on the surface of the skin or hair. This barrier helps lock in moisture and prevents dry, irritated skin/hair.

TLDR 

Tocopheryl acetate is a great ingredient which helps to replenish shine, and creates a protective barrier on the scalp and hair. It is good for hydration.