“Less than 10% is not as effective, and over 20% causes more skin irritation.” A supporting cast of characters can also boost its efficacy. “You should look for serums that contain 10% to 20% vitamin C,” says New York City dermatologist Morgan Rabach, MD. You’ll also want to consider its concentration. Another popular one? Tetrahexyldecyl ascorbate, which tends to be more stable than its counterparts. “It’s typically highly unstable, so it must be adequately protected from sunlight and capped at an acidic pH.” Howe’s preferred form is also L-ascorbic acid, which he says penetrates more deeply than other forms, making it more likely to reach the layers of skin where you actually need it to work. “It’s a pure form of vitamin C,” says NYC dermatologist Joshua Zeichner, MD. You might have heard experts debating the merits of various forms of the power ingredient. With that in mind, scroll on to learn how to use vitamin C serum for glowing skin, how to choose the best one for you, and why this wonder ingredient is a key player in the best skin care routine for every skin type. In order to get maximum results, though, you’ll need these highly concentrated actives to be properly formulated and applied. “Serums typically have the highest concentration of active ingredients,” says Dr. (Think glass skin.)ĭerms will often tell you to get your daily dose of vitamin C in serum form when adding it to your skin-care routine. The end result? A more radiant complexion and smoother skin texture over time. Vitamin C can prevent that damage by ‘quenching’ the free radicals as they form.” It also inhibits a key enzyme in melanin production, so it can improve pigmentation like dark spots too. “When ultraviolet light penetrates your skin, it causes lasting damage by producing free radicals. “Vitamin C is an antioxidant,” says Kenneth Howe, MD, of Wexler Dermatology in New York City. The antiaging antioxidant is one of the few skin care ingredients dermatologists will back for its noticeable brightening, protective, and firming properties, as well as its ability to boost collagen production-which has a plumping effect. No matter which skin issues you’re currently dealing with, chances are your routine could benefit from the best vitamin C serums.
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