Medik8 - C-Tetra Day Cream A lightweight, hydrating day cream that harnesses the brightening power of vitamin C. The perfect daily moisturizer to visibly revive skin's natural luminosity. Featuring tetrahexyldecyl ascorbate (a low irritation form of vitamin C) combined with co-antioxidant vitamin E, the moisturizer helps to reduce the appearance of premature skin aging signs. The silky cream also contains hyaluronic acid to infuse the complexion with hydration, leaving it feeling smooth and visibly supple. C-Tetra Day Cream leaves skin feeling nourished, visibly radiant and ready for the day. Medik8 recommend a simple, effective skincare strategy of using vitamin C and sunscreen in the morning and vitamin A at night.