C-Tetra® Luxe

Key Benefits Instant Skin Youthfulness Boosted with optimised red ginseng for proven skin-brightening and youth-boosting power. Total Skin Nourishment Enhanced with squalane and vitamin F for deep moisturisation and clinically proven skin barrier support. Dark Spot Reduction Delivers powerful, clinically proven action on the appearance of dark spots. Proven Results BEFORE AFTER 8 WEEKS BEFORE AFTER 8 WEEKS 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. How to Use First-time use If you're new to C-Tetra Luxe, we recommend a patch test at least 24 hours before first use. Learn how to patch test here . Step 1 After cleansing in the morning, massage 6 drops of C-Tetra Luxe across the face, neck and décolletage. Step 2 Leave to absorb before applying sunscreen. We recommend Advanced Day Ultimate Protect . Uses per bottle 200 Guide to Layering Step 1: Cleanse Surface Radiance Cleanse™ Select a Size Full Size (150ml) Full Size (150ml) Travel Size (40ml) Add to Bag £25 Step 2: Brighten C-Tetra® Luxe Select a Size Full Size (30ml) Full Size (30ml) Travel Size (8ml) Add to Bag £62 Step 3: Target Liquid Peptides Advanced MP Full Size (30ml) Add to Bag £82 Step 4: Renew Crystal Retinal® Select a Strength Recommended: Crystal Retinal 6 Crystal Retinal 1 Crystal Retinal 3 Recommended: Crystal Retinal 6 Crystal Retinal 10 Crystal Retinal 20 Crystal Retinal 24 Add to Bag £69 Step 5: Moisturise Total Moisture Daily Facial Cream™ Select a Size Full Size (50ml) Full Size (50ml) Refill (50ml) Travel Size (12.5ml) Add to Bag £50 Key Ingredients 14% Stabilised Vitamin C (tetrahexyldecyl ascorbate) A low-irritation form of vitamin C that delivers exceptional antioxidant protection against harmful free radical damage while supporting collagen production for a visibly even, more youthful-looking complexion. Squalane An almost skin-identical lipid which helps to support the natural skin barrier by nourishing the complexion. Maracuja (pronounced 'marra-KU-ja') Oil Naturally rich in nutrients and fatty acids, maracuja oil deeply nourishes your skin while providing additional antioxidant protection against free radical damage. Optimised Red Ginseng Boosts the serum’s brightening powers while stimulating collagen production for more youthful-looking skin. Maracuja (pronounced 'marra-KU-ja') Oil Naturally rich in nutrients and fatty acids, maracuja oil deeply nourishes your skin while providing additional antioxidant protection against free radical damage. Optimised Red Ginseng Boosts the serum’s brightening powers while stimulating collagen production for more youthful-looking skin. Vitamin E A powerful antioxidant that provides additional antioxidant protection against the ageing effects of free radicals. It also helps to boost the power of vitamin C for optimum visible results. See More View all Dermatologically tested Clinically proven formula No artifical fragrance No synthetic colours Paraben free Alcohol free Certified by the vegan society Experts Recommended "Your skin needs this like the desert needs the rain!" POLLY VERNON Features Writer - The Times Can I use C-Tetra Luxe if I'm pregnant or breastfeeding? As a cosmetics company, we are unable to provide product advice in relation to medical conditions such as pregnancy. We would recommend discussing the ingredients with your GP or midwife before use. As general guidance, this product does not contain any ingredients which we would recommend to avoid during pregnancy, unless advised by your doctor. What vitamin C strength is C-Tetra Luxe? C-Tetra Luxe contains 14% stabilised vitamin C (tetrahexyldecyl ascorbate). Can I use a vitamin C serum alongside vitamin A? Absolutely. In fact we recommend it as part of our pioneering CSA Philosophy which champions vitamin C plus sunscreen by day, vitamin A by night as the simple secret to glowing, youthful-looking skin. Help Products About Resources deborah c. 🇬🇧 Verified Buyer 18/09/26 Dannielle G. 🇬🇧 Verified Buyer 30/03/26 Yulia L. 🇺🇸 Verified Buyer 10/03/26 Svitlana T. 🇬🇧 Verified Buyer 09/01/26 Sharon S. 🇬🇧 Verified Buyer 06/01/26 Emel O. 🇺🇸 Verified Buyer 05/01/26 Boost radiance with Medik8’s C-Tetra Luxe, a powerful serum with vitamin C that brightens, targets hyperpigmentation, and smooths fine lines. Shop online. Supercharge your skin's radiance each morning with C-Tetra Luxe; clinically proven to reduce the appearance of wrinkles and hyperpigmentation in just 4 weeks.* It also works to boost visible radiance while supporting the skin barrier. Featuring twice the amount of vitamin C (14%) of our original C-Tetra serum, C-Tetra Luxe is ideal for those looking for enhanced skin radiance and antioxidant protection alongside deep nourishment. The velvety-soft serum is formulated with a stabilised (and therefore very potent) form of vitamin C called tetrahexyldecyl ascorbate (pronounced 'tetra-hexul-deckul as-CORR-bate'), which delivers proven results after just 1 use*; all with a gentle, nourishing experience for your skin.