Serum 10 AOX+ – Gentle Vitamin C Protection for Sensitive Skin Serum 10 AOX+ is a lightweight, daytime vitamin C serum designed for sensitive skin or those new to vitamin C. This gentle yet effective formula provides powerful antioxidant protection against environmental stressors like pollution, wind, and dust, which can contribute to dryness and premature aging. Formulated with 10% pure vitamin C (L-ascorbic acid) and 0.2% ferulic acid, this serum helps neutralize free radicals, while visibly reducing fine lines and wrinkles for a smoother, more radiant complexion. Perfect for daily use, Serum 10 AOX+ delivers all the benefits of vitamin C in a gentle, well-tolerated formula, making it an ideal first step into antioxidant skincare. RECOMMENDED FOR • Sensitive • Normal • Sensitized • Acne • Aging HOW TO USE In the morning after cleansing, apply 4-5 drops of this antioxidant serum to a dry face, neck, and chest before other skincare products. May also be used on backs of the hands. It is normal for vitamin C products to darken after opening due to air and light exposure. The formula will remain effective. Once opened, it is recommended to be used within 3 months of opening. Complete your regimen with a SkinCeuticals sunscreen. When used together, SkinCeuticals antioxidants and broad spectrum sunscreens provide more comprehensive protection against visible aging caused by environmental aggressors. KEY INGREDIENTS 10% L-ascorbic acid: Lauded for its superior antioxidant benefits, this highly potent form of pure vitamin C helps neutralize free radicals and protect against oxidative stress while providing visible anti-aging benefits. 0.2% ferulic acid: A plant-based antioxidant, ferulic acid neutralizes free radicals and enhances the antioxidant benefits and stability of vitamins C.