D-alpha-tocopherol

What's tocopheryl acetate?
Alpha-tocopheryl acetate (ATA) is a specific form of vitamin E that's often found in skin care products and dietary supplements. It's also known as tocopheryl acetate, tocopherol acetate, or vitamin E acetate.
Vitamin E is known for its antioxidant properties. Antioxidants help to protect your body from damaging compounds called free radicals. Normally, free radicals form when your body converts food into energy. However, free radicals can also come from UV light, cigarette smoke, and air pollution.

In nature, vitamin E comes in the form of tocopheryl or tocotrienol. Both tocopheryl and tocotrienol have four forms, known as alpha, beta, gamma, and delta. Alpha-tocopheryl (AT) is the most active form of vitamin E in humans.
ATA is more stable than AT, meaning it can better withstand environmental stresses such as heat, air, and light. This makes it ideal for use in supplements and fortified foods because it has a longer shelf life.

Where can I find tocopheryl acetate?
Cosmetics and supplements
You'll find ATA in a variety of skin care products. The antioxidant properties of vitamin E can help to prevent damage to skin caused by free radicals from UV exposure. Vitamin E may also have an anti-inflammatory effect on the skin.

Due to its higher stability, ATA is also used in vitamin E dietary supplements. When taken orally, ATA is converted to AT within the intestine. Vitamin E is in most multi-vitamins, so be sure to check how much is in your multi-vitamin if you take one, before adding a supplement.

Foods
In addition to dietary supplements and cosmetic products, you can find vitamin E in the following foods:
● Green leafy vegetables, such as broccoli and spinach
● Oils, such as sunflower oil, wheat germ oil, and corn oil
● Sunflower seeds
● Nuts, such as almonds and peanuts
● Whole grains
● Fruits, such as kiwi and mango
● Vitamin E is also added to fortified foods, such as cereals, fruit juices, and many spreads. You can check food labels to see if vitamin E has been added. If you want to increase your vitamin E intake, you should start by first increasing your intake of these foods.

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Using AT on the skin, especially with vitamin C, helps to prevent UV damage to the skin. In a review of studies, the Linus Pauling Institute at Oregon State University found that using AT with vitamin C on the skin decreased sunburned cells, DNA damage, and skin pigmentation following UV exposure. However, AT is less stable in the environment than ATA, which makes it harder to store.

While ATA is less sensitive to heat and light than AT is, there's less conversion of ATA to the active AT form within the skin. This is because the cells in the upper layer of your skin are much less metabolically active. As a result, using cosmetic products containing ATA on your skin may not be very effective.