But what exactly is vitamin E, and what can it do for your skin? We asked a team of experts for a quick refresher course on all things vitamin E, including who should (and shouldn't) use it, and the best ways to incorporate it into your skin care routine. 

What Is Vitamin E?
Yes, it is a vitamin, but if you want to get technical, the term vitamin E actually refers to a group of compounds. "Vitamin E is the name given to a family of oil-soluble antioxidants," explains cosmetic chemist Ni'Kita Wilson. "There are about eight different types" or forms of vitamin E, and of those, "tocopheryl acetate and tocopherol are most commonly found in skin care products".
In other words, although there are technically eight chemical forms in which vitamin E naturally occurs, when you see "vitamin E" on your skin-care or supplement packaging, it's almost always tocopherol. This is the only form of vitamin E that's recognised to meet human requirements. So if you see the term "tocopherol" on the ingredient list of your favourite serum or moisturiser, it's vitamin E.

How Does Vitamin E Benefit Our Skin?
"It can be very helpful for a range of skin disorders, as well as skin repair," explains board-certified dermatologist Ava Shamban. "It assists in various kinds of cellular restoration from sun damage to healing support for scars or burns." But how does vitamin E work on the skin? What is the mechanism?

As mentioned, vitamin E is an antioxidant explains cosmetic chemist Ginger King. A quick refresher on why antioxidants are so important to our health, topically and internally: They prevent oxidative damage to cells by helping to remove free radicals (the bad guys).
"Free radicals are on a destructive quest to become stable, so they are ready and willing to snatch an electron from anything that comes in its path, including DNA, skin proteins, connective tissues, and cell membranes," Wilson explains. "The more you can quench the free radicals' thirst for stability, the better your skin will be protected, which is where vitamin E comes into play."

Vitamin E fights off free radicals on the skin, which are a result of daily environmental stressors like unprotected sun exposure and air pollution. In fighting off free radicals, vitamin E helps protect the skin from damage.
Additionally, vitamin E has "moisturising and healing" benefits, and helps to "strengthen skin barrier function," King says.

Basically, it's an all-around "workhorse of a vitamin," as Shamban calls it. "Vitamin E is also a natural anti-inflammatory, so it can be soothing and help calm the skin," she says. "It's also good for hydrating skin, and serves as a moderately effective natural barrier to the sun."

Who Should Use Vitamin E On Their Skin And Who Should Avoid It?
"Vitamin E is usually not advisable for supersensitive, very oily, or acne-prone skin," Shamban says. Although it's very uncommon, topical vitamin E can also act as an allergen to some, causing irritation, itching or even a rash when it touches the skin. Scientists still aren't sure what causes certain people to become allergic to it (King compares it to a peanut allergy), but according to board-certified dermatologist Audrey Kunin, less than one percent of people are topically sensitive to the ingredient.

Considering that it's also a naturally occurring substance in the body, and it's also been shown to relieve eczema for some people, sensitivity is really "a case-by-case basis that, at this point, cannot be generalised as an allergen," Wilson explains.

For the vast majority, though, vitamin E can posit serious skin benefits, Shamban says. Because vitamin E is oil soluble (meaning it can be delivered through or as an oil), incorporating it into your skin-care routine through oils and moisturisers are some of the best ways to use the ingredient.
When vitamin E is paired with vitamin C, Shamban says, they are even more effective as partners, which is why many serums contain both.

If you're new to using vitamin E, or your skin is on the sensitive side, try it out in a moisturiser first (since serums are technically more potent concentrations).