What It Is: This powerful, radiance-boosting treatment contains a 10% potent level of Vitamin C. This lightweight, oil-free serum transforms skin from dull to radiant, as it helps protect against free radical damage. Stimulates collagen production. Brightens skin, improving radiance. Provides anti-oxidant protection against free radical and environmental damage. Helps prevent the irritation and dehydration commonly associated with Vitamin C treatments. Oil-free, paraben-free, Passover approved.