Experience Medik8's cult-favourite vitamin C serum, specially formulated with gentle yet effective stabilised vitamin C. Perfect for sensitive skin and beginners, it delivers visible brightening results, leaving your complexion radiant and rejuvenated.
- A proven low- irritation formula, 96% of sensitive skins found C-Tetra to be gentle on their skin.*
Over time, vitamin C diminishes the appearance of fine lines and wrinkles, while visibly balancing and brightening the skin tone.
Tetrahexyldecyl Ascorbate (Vitamin C) & Vitamin E
How To Use
- After cleansing in the morning, massage 4 drops across the face, neck, and décolletage
- Leave to absorb before applying sunscreen. We recommend Advanced Day Total Protect.
- Patch testing prior to use is advised. Refer to https://www.medik8.com/pages/patch-test for an in-depth guide to patch testing.
- 4.Interested in routines & layering?C-Tetra features in many of our carefully curated regime guides, including our Fine Lines Defence regime. Click the link for additional product recommendations and easy-to-follow layering advice.
The Science Behind
“It is exceptionally difficult to formulate a long-lasting vitamin C serum that will keep its power over time. It is notoriously unstable, sensitive to oxidation and can often turn yellow in colour, which indicates that it has gone off. Medik8’s C-Tetra range utilises an extremely stable form of vitamin C, called tetrahexyldecyl ascorbate. This molecule is altered to make it less reactive to oxidation, meaning that even 6 months down the line you can be sure your vitamin C is still as potent as when you first opened it.”