You reach for vitamin C when you feel a cold coming on, but did you know it also plays a role in delivering a smooth, glowing complexion? It’s become a holy-grail item for the skin-obsessed in recent years.
Here, dive into everything you need to know about vitamin C serums, including why to use one, how to apply it, and what to watch out for.
What is a Vitamin C Serum Exactly, and What’s in It?
A vitamin C serum is a skin-care product packed with vitamin C. It has the consistency of a liquid or gel, and is applied topically to the skin. You’ll find these serums wherever you normally purchase skin-care products — at department stores, beauty stores, and some drug stores, too. On the packaging, you’ll likely see words touting skin benefits like “firming,” “brightening,” and “collagen boosting.” Tapping into those benefits is the main reason to add a vitamin C serum to your skin-care routine.
“The benefit of vitamin C is it’s an antioxidant, so it helps prevent the forming of free radicals, which go on to break down collagen and elastin,” Saedi says. The result, she says, is glowing, youthful skin.
Research Behind Vitamin C and Vitamin C Serums
Of course, you can source vitamin C through foods, namely fruits and vegetables like cantaloupe, oranges, pineapple, broccoli, and Brussels sprouts, according to MedlinePlus. It’s an important nutrient to load up on because it’s essential for growth and development. It plays a role in forming and repairing body tissue, and delivering antioxidants to cut down on the presence of dangerous free radicals.
Vitamin C is also naturally present in the skin, where it helps promote collagen and antioxidant levels, and protects the skin against UV-ray-induced photodamage, according to a study published in August 2017 in the journal Nutrients. Sounds great, right? You may be thinking about how to increase vitamin C in your diet to tap into these benefits. Unfortunately, simply eating more oranges and cantaloupe isn’t going to cut it. That’s because the epidermis, the outermost layer of the skin, doesn’t have blood vessels to send nutrients to the skin cells, according to the Nutrients study.
Vitamin C can, however, be applied topically — and that’s where vitamin C serums come in. “Vitamin C is best known for its ability to neutralize free radicals and improve aging skin,” says Joel Schlessinger, MD, an Omaha, Nebraska-based dermatologic surgeon and RealSelf contributor. “It can also improve collagen and elastin synthesis — which can improve the appearance of fine lines and wrinkles; help reduce inflammation, provide natural, mild exfoliation; and brighten skin.”
Research has also shown the effectiveness of topical application. A study published in September 2015 in Clinical, Cosmetic and Investigational Dermatology found applying vitamin C topically increased collagen production among study participants in all age groups. The study participants noticed the effects after 40 days of treatment and were even more pronounced at the 60-day mark.
It can also help with melasma and post-inflammatory hyperpigmentation. According to a January 2013 study published in Journal of Drugs and Dermatology, study participants saw an average 73 percent improvement in skin pigmentation as a result of applying vitamin C to the face.