Vitamin C (above 10% concentration) when applied on skin is proven to act on hyperpigmentation dark spots oxidative damage like wrinkles and boost the natural glow of your skin. Thoughtfully formulated for efficacy safety and all-round results this serum contains Ethyl Ascorbic Acid (EAA 15% active) â a water-soluble form of Vitamin C that penetrates skin quickly and stays stable for longer without oxidizing. When we say 15% we mean 15% - because we've added 17.5% of EAA which contains 86% active Vitamin C by weight. In our consumer study we found - 83% users saw enhanced skin glow & 32% reduction in dark spots. This supercharged Vitamin C face serum is all skin type friendly and can be used at day or night. *Self assessment study conducted on 41 subjects with varying skin types NOTE : This product does not contain salicylic acid