Enhance your skin's luminosity each day with Medik8's C-Tetra Luxe; clinically proven to reduce the appearance of fine lines and pigmentation in just 4 weeks.* The advanced formula brightens the complexion and visibly strengthens the skin barrier, while seeking to minimise the look of dark spots and dryness.With double the vitamin C content (14%) compared to the original C-Tetra serum, the potent formula is ideal for those seeking a boost of natural radiance and antioxidant protection, paired with deep hydration. Boasting a velvety-smooth texture, the serum contains a stabilised and highly potent form of vitamin C known as tetrahexyldecyl ascorbate, helping to deliver noticeable results after just one application*, providing a gentle, nourishing experience for your skin.1 hour to visibly brighter, more youthful-looking skin*7 days to improved skin radiance*81% agree visible hyperpigmentation had reduced in just 4 weeks*94% noticed smoother and softer skin after just 1 use*86% reported it was the best vitamin C serum they had ever used**Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants.Please note: Product packaging shown may be different to the product received due to regional variations.