This serum will allow you to fight against: 1- Wrinkles related to normal aging due to repeated exposures to the sun Skin content in vitamin C decreases with age. Vitamin C based cares, at concentrations of at least 5%, improves skin structure (this serum contains 20%). 2 – Signs of aging caused by oxidation Vitamin C and blueberries in this serum have an important antioxidant action. Indeed, they neutralize free radicals generated by UV rays, stress, tobacco and pollution. 3 – Dull complexion Vitamin C in synergy with fruit acids that contain this serum (sugar cane, lemon, orange, etc.) have a powerful effect to illuminate the skin and confer it a new brightness. The complexion is uniform and brighten and the skin is finer and more beautiful.