Sun pollution smoking and other aspects of our lifestyle all lead to the formation of free radicals. These free radicals cause oxidative stress on the skin accelerate premature skin ageing and make it look dull. Eucerin Hyaluron-Filler Vitamin C Booster with 10% pure instant-activated Vitamin C is specially formulated to fight free radicals and address the first signs of ageing: it firms the skin plumps up wrinkles and gives it a smoother more radiant appearance. Vitamin C is a powerful antioxidant that neutralizes free radicals and strengthens the skin's defense system. It is also essential for the production of collagen in skin cells helping to support skin structure and delay signs of aging. The innovative packaging ensures that pure Vitamin C is activated immediately upon first use. Simply squeeze and shake the bottle to mix the Vitamin C powder into the serum containing low molecular weight Hyaluronic Acid and Licochalcone A. The formula's effectiveness lasts for 21 days. Low molecular weight Hyaluronic Acid is an effective moisturizer that fills wrinkles in the outer (epidermal) layers of the skin. Licochalcone A is also a proven antioxidant that works with Vitamin C to neutralize free radicals caused by UV rays and high-energy visible light (HEVIS) . Eucerin Hyaluron-Filler Vitamin C Activating Serum is suitable for all skin types and is clinically and dermatologically proven to support skin and plump up wrinkles . Skin looks smoother fresher and more radiant in just seven days with results improving over tim