Perfect Introduction The perfect introduction to anti-ageing skincare, C-Tetra Cream shields skin from free radical damage and restores radiance. Radiant Skin The fast-absorbing formula helps to maintain skin health, improve uneven skin tone and restore radiance. Powerful Antioxidant Protection Using a lipid-soluble form of vitamin C, tetrahexyldecyl ascorbate, the formula is able to deeply penetrate the skin, providing powerful antioxidant protection with minimal irritation. Hydrating Hyaluronic acid and glycerin leave skin supple and hydrated, while also supporting skin's natural barrier.