Medik8 C-tetra Lipid Vitamin C Antioxidant Serum 30ml

£30.47 Regular price
Tax included.

Please Note:

  1. Only one discount code is valid per transaction. Redemption of points and discount code on a single transaction is not valid.

  2. Our discounts are very impromptu, and only orders which have the code applied will be considered, no requests will be encouraged to apply any discount code once the order has been made.
Delivery Cost Estimated Delivery Time
Standard Delivery

Use code: FREEDEL
(£1.95 for order below £25)

3 - 5 Day Delivery

*Note: Only one code is valid per order and Free Delivery offer cannot be applied in conjunction with other offers.

Kindly note orders placed after Friday 1.00 PM till Sunday midnight are shipped on Monday.

We Ship our products all over the UK. 



Product Description

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.

Key Benefits 

  • 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 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.”


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