The sun, pollution, smoking and other aspects of our lifestyles trigger the formation of free radicals. Free radicals cause oxidative stress to skin, accelerate premature skin ageing and leave skin looking dull. Eucerin Hyaluron-Filler Vitamin C Booster with 10% pure and freshly-activated Vitamin C has been specially formulated to fight free radicals and address the first signs of ageing: it strengthens skin, plumps up wrinkles and gives you a smoother, fresher and more radiant look. Vitamin C is a powerful anti-oxidant which neutralizes free radicals and strengthens skin's own defense system. It is also essential to the production of collagen in skin cells, helping to support skin's structure and delay signs of ageing. Innovative packaging ensures that the pure Vitamin C is freshly-activated on first use. Simply press and shake to combine the Vitamin C powder into a serum of low molecular Hyaluronic Acid, and Licochalcone A. The formula is at its most effective for 21 days. Low molecular Hyaluronic Acid is an effective moisturiser that plumps up wrinkles in the epidermal (outermost) layers of skin. Another proven anti-oxidant, Licochalcone A, works alongside Vitamin C to neutralise the free radicals caused by UV and high-energy visible (HEVIS) light. Eucerin Hyaluron- Filler Vitamin C Booster is suitable for all skin types and is clinically and dermatologically proven to strengthen skin and plump up wrinkles. Skin is smoother, fresher and more radiant in just seven days and results improve over time. How to use: Vitamin C is at its most effective when it's freshly-activated. Our innovative packaging makes it easy to activate on first use. 1. Remove FoilPeel off protective foil but leave the cap on 2. Press the Soft ButtonLeaving the cap on, press the soft button 2 or 3 times to release the Vitamin C 3. ShakeShake the dispenser for at least 10 seconds to activate the formula 4. Remove CapRemove the cap by twisting it 5. BoostTurn upside down and press the soft button to release the formula