Vitamin C exerts a comprehensive anti-aging action: it participates in the synthesis and repair of dermal collagen, helping to regenerate the extracellular matrix, firming the skin and providing greater smoothness and elasticity. It protects against free radical damage and the harmful effects of UV radiation (erythema, redness). It evens out skin tone by interfering with the melanin synthesis process. Apply the product to the areas to be treated. Massage gently with your fingertips until completely absorbed. 12% pure Vitamin C.