According to our experts, the vitamin C type will also determine its effectiveness. Pure vitamin C, known as L ascorbic acid, ...

Despite its efficacy, vitamin C is notoriously unstable and can quickly go from a hyperpigmentation-zapping wonder ingredient to a $60 bottle of smelly serum. That’s why it’s important to find ...

Why We Love It: This vitamin C serum did more than brighten skin—it demonstrated what an easy, effective skin care routine can look like. In addition to being one of the more affordable options ...

Applied every morning after cleansing and before moisturising, each vitamin C serum was tested on its ease of use, scent, feel, price point and, ultimately, the result seen on the skin.

For a vitamin C serum to be effective, dermatologists say there are a few key things to consider: Want more from NBC Select? Sign up for our newsletter, The Selection, and shop smarter.

It's Eva Naturals Vitamin C Serum — and it's down to $10 from $15 right now. Glowier, smoother skin, here you come! This anti-aging hero is loaded with antioxidants and hyaluronic acid ...