Vitamin E does nothing to stop hair loss. Hair is mostly protein .
Vitamin E is a fat-soluble vitamin and is stored in the body.
Vitamin E does combine with oxygen which is beneficial to polyunsaturated fats and vitamin A . Both polyunsaturated oils and vitamin A combine with oxygen and break down. Vitamin E interferes with that break down process. Because of its antioxidant properties, vitamin E is stable to most cooking methods except long cooking at very high temperatures that would break down fat as well. Vitamin E deficiency has not been proven in humans, but it has in animals.