Previously known as Medik8 C-Tetra Intense, this renewed and reformulated update is better than ever. If you're looking for amplified results, Medik8 C-Tetra Luxe is the perfect upgrade from the Medik8 C-Tetra Serum, C-Tetra Cream or Daily Radiance Vitamin C. Fight visible signs of ageing, restore radiance and repair free radical damage with the new and improved Medik8 C Tetra Luxe (previously known as the C-Tetra Intense, and CE-Tetra). This serum is stronger than the C-Tetra formula, boosted with additional brightening and nourishing ingredients as well as 100% stable Vitamin C that remains potent and highly effective until you've finished the bottle!