What it is: A 10% vitamin C serum that visibly brightens, targets dark spots, and reduces hyperpigmentation with a waterless formula that’s gentle on skin.Skin Type: Normal, Dry, Combination, and OilySkincare Concerns: Dark Spots, Dullness, and Loss of Firmness and ElasticityFormulation: SerumHighlighted Ingredients:- L-Ascorbic Acid 10%: Visibly brightens, evens skin tone, and tightens the look of skin.- Alpha Arbutin 1% and Ferulic Acid: Target the look of dark spots and hyperpigmentation while enhancing the benefits of vitamin C.- Upcycled Tangerine Peel and Sugar Beet: Hydrate and boost the skin’s moisture and visible radiance.Ingredient Callouts: This product is vegan, gluten-free, cruelty-free, and comes in recyclable packaging.What Else You Need to Know: A 10% vitamin C serum that’s shown to visibly brighten, firm, and target the look of dark spots. 10% L-ascorbic acid, the purest form of vitamin C, is powered by a waterless technology for maximum stability and potency until the very last drop. 1% alpha-arbutin and ferulic acid visibly even skin tone and reduce the look of hyperpigmentation, while upcycled tangerine peel hydrates and boosts moisture without irritation.This formula is both water-free and oil-free. The primary base is Propanediol, although it's not an oil, it feels similar in texture and dries down to provide a unique, silky-smooth feeling on the skin.Clinical Results: In a clinical study of the 10% Waterless Vitamin C Serum with 33 participants over 8 weeks, users reported:- Visibly brighter skin after 1 use- Serum was gentle on skin after use 2x dailyIn a clinical study of 10% Waterless Vitamin C Serum with 33 participants based on 4-8-week improvement:-16x improvement in size and intensity of dark spots-2x improvement in skin tone evennessClean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.