C Tetra Antioxidant Vitamin C Serum Medik8 A formula for every skin type., Swipe to find your perfect Vitamin C match. , , C Tetra our lightweight oil is suitable for beginners and sensitive skin, , C Tetra Luxe a richer oil formula Medik8 Vitamin C C Tetra Eye Lipid Vitamin C Radiance Serum SweetCare United States Discover the secret to radiant skin with C Tetra Luxe, our Vitamin C serum that visibly firms and brightens your complexion. Curious for more? Swipe for a glimpse of our other 5 star serums