Defend against premature ageing and unlock visible radiance with Medik8 C-Tetra Advanced, a cutting-edge 20% vitamin C gel-serum infused with phyto exosomes and powerful antioxidants. Clinically proven to brighten skin and visibly reduce wrinkles in just 7 days* with 0% barrier disruption*, this next-generation formula delivers transformative results with a gentle, intelligent touch. Powered by stabilised vitamin C, deep-delivering phyto exosomes, and omni-antioxidant acetyl zingerone, this high-performance serum offers daily protection against environmental aggressors while smoothing skin texture and supporting long-term barrier health. Hydrating hyaluronic acid and skin-refining N-acetyl glucosamine complete the formula, leaving your complexion brighter, firmer, and more resilient with every use. Benefits of Medik8 C-Tetra Advanced 30ml: Brightens skin and evens tone in 7 days.* Strengthens and supports the skin barrier. Defends against pollution and environmental stressors. Improve