- Formulated using pure vitamin C, Pure C15 is perfect for those who are experienced in using vitamin C in their regime and are looking for a higher strength - This innovative serum visibly brightens skin tone, smooths fine lines, firms tired skin, and refines skin texture - Using an intelligent rechargeable antioxidant network the serum is able to keep all of its actives stable and potent to deliver incredible brightening and firming results Medik8 Pure C15 Formulated using pure vitamin C, Pure C15 is perfect for those who are experienced in using vitamin C in their regime and are looking for a higher strength. Potent Vitamin C is clinically proven to have anti-ageing benefits. Pure C15 helps protect the skin against free radicals (the main cause of photo-ageing), while minimising the formation of dark spots for a visibly brighter skin tone and an improved texture and firmness. Unlike any other vitamin C serum, Pure C15 uses Medik8's trademark Rechargeable Vitamin C™ concept to ensu