C-Tetra
A water-free, 100% stable Vitamin C oil serum that brightens, boosts elasticity and defends against environmental damage without ever oxidising.
Cruelty-Free, Vegan, B Corp Certified, Made in UK
Pairs well with
100% stable water-free vitamin C serum that defends against sun damage and visibly improves elasticity and firmness.
Medik8 C-Tetra is a 100% stable, water-free Vitamin C serum formulated to combat sun-induced skin damage while visibly improving elasticity and density. Powered by an advanced combination of Vitamin C and complementary skin-loving actives, this lightweight oil-based serum delivers potent antioxidant protection against environmental aggressors — brightening the complexion and helping to restore a firmer, more youthful-looking appearance over time.
Key Ingredients
Tetrahexyldecyl Ascorbate: oil-soluble Vitamin C that stays stable and never oxidises, delivering potent brightening and collagen-boosting benefits
Tocopheryl Acetate and Vitamin E: reinforce antioxidant protection and support skin resilience
Jojoba Seed Oil: lightweight, skin-compatible carrier that absorbs quickly without greasiness
Citrus Grandis Peel Oil: grapefruit-derived oil for a fresh, sensorial finish
Skindays Approved
• Brightens uneven tone and supports firmer-looking skin over time
• Lightweight oil absorbs cleanly, layers well under moisturiser in the morning
• Suitable for all skin types including those targeting sun damage and dullness
How To Use
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