Lemonvate - With refreshing vitamin C Vitamin C is essential for maintaining healthy skin. It is also known as Ascorbic Acid, the key producer of collagen, which gives skin its firmness and strength, helping your skin repair itself. Vitamin C is an antioxidant that slows the rate of free-radical damage (unstable molecules that cause dark spots, rough dry skin, dullness, sun damage and fine lines and wrinkles).