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Medik8 C-Tetra® 30ml

Medik8 C-Tetra® 30ml

%0 4.73 | 787 reviews
Box

£42.00 (£1.40 per ML)

In stock

If you like we can let you know when we have some more.

Product Description

Restore the appearance of skin radiance in just 7 days* with Medik8’s cult favourite C-Tetra serum.

Expertly formulated by their skincare experts with a stabilised form of vitamin C (tetrahexyldecyl ascorbate ), this lightweight serum reduces the appearance of fine lines and wrinkles and visibly brightens uneven skin tone - all while remaining gentle on sensitive skin.

The addition of antioxidant-rich vitamin E protects the skin against the damaging and ageing effects of free radicals for a more healthy, youthful-looking complexion overall. The perfect daily serum for those who are new to vitamin C, or have sensitive skin.
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.

Key Benefits:
Increased Skin Youthfulness
Proven to smooth the appearance of fine lines and wrinkles and visibly boost skin's radiance in 7 days*
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.

Brighter, More Even Complexion
Proven to visibly brighten the skin in 7 days* and reduce the appearance of wrinkles & dark spots in 4 weeks*
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.

Gentle, Lightweight Nourishment
The jojoba seed oil-based formula delivers non-greasy yet effective nourishment for visibly comforted and softer skin.
87% of sensitive skins agree this is the most gentle vitamin C serum they have ever used*
96% of sensitive skins agreed C-Tetra was gentle on the skin*
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.

Proven Results:
7 days to restored skin radiance*
7 days to visibly brighter
96% of sensitive skins agreed C-Tetra was gentle on the skin*
4 weeks to visibly reduced wrinkles & dark spots*
90% agree skin feels instantly softer*
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.

Key Ingredients:
Stabilised Vitamin C (tetrahexyldecyl ascorbate)
This stable, low-irritation form of vitamin C is incredibly effective on the skin; delivering exceptional protection against ageing free radicals. Supporting collagen production and brightening the skin tone, it leaves the complexion visibly more even, radiant and youthful-looking.

Vitamin E
Rich in antioxidants, vitamin E helps to protect the skin against ageing free radicals. It also helps to boost the power of vitamin C for maximum visible results.

Good to Know:
NO ARTIFICIAL FRAGRANCE
NO SYNTHETIC COLOURS
PARABEN FREE
CERTIFIED BY THE VEGAN SOCIETY

Directions

STEP 1
After cleansing in the morning, massage 4 drops across the face, neck and décolletage.

STEP 2
Leave to absorb before applying sunscreen. We recommend Advanced Day Ultimate Protect.

How to Layer C-Tetra
AM: Apply C-Tetra after cleansing and toning in your morning skincare routine. Always follow with sunscreen.

Ingredients

Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

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Rated 5 out of 5 by from Amazing product. People commemt how Amazing product. People commemt how great my skin is looking and this is the only new product I have introduced to my skin care routine. Gives you skin a healthy glow.
Date published: 2025-05-30
Rated 5 out of 5 by from Best Vit C serum! After using a sample of Medik8 C Tetra, I had to buy a full size bottle of vit c serum. My face radiates after using the treatment and it's no doubt due to the high quality product.
Date published: 2025-05-29
Rated 5 out of 5 by from Is a great base, is Is a great base, is not oily at all. Very brightening
Date published: 2025-05-29
Rated 5 out of 5 by from This is such a beautiful This is such a beautiful serum. It smells wonderful, and feels so nice on the skin. It has a slight oil like consistency but there is no stickiness. It just feels like it is hydrating your skin. My skin looks and feels healthier since I’ve been using this serum. This is my second bottle. Precious vitamin C serums have irritated my skin. This one has never caused any irritation. My 55 year old skin just loves it.
Date published: 2025-05-29
Rated 5 out of 5 by from Love this product. Really brightens Love this product. Really brightens my skin and leaves it looking fresh and glowy
Date published: 2025-05-27
Rated 3 out of 5 by from 3 stars Enjoying this so far, unfortunately just don’t love the scent, quite overpowering
Date published: 2025-05-27
Rated 5 out of 5 by from I find this vitamin C I find this vitamin C to be gentle ( even on my slightly sensitive skin ) it sinks in quickly and makes my skin feel plump and hydrated. This is my second bottle and my complexion is looking more even toned
Date published: 2025-05-27
Rated 4 out of 5 by from So far so good, I So far so good, I have been using this serum for a couple of weeks now and it is not irritating to my skin at all, it definitely leaves it feeling soft and I have had people compliment my complexion since starting it. The only reason I’ve given it 4* is it’s quite runny so I find you often just lose a drop of serum from the dropper to the floor before you can get it from the bottle to your hand.
Date published: 2025-05-26
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Can I use this serum under eyes?

Asked by: Anonymous
Yes absolutely! 
Answered by: Anonymous
Date published: 2023-05-24

What % vitamin c?

Asked by: Anonymous
The tetrahexyldecyl ascorbate (Vitamin C) in C-Tetra serum is 7%.
Answered by: Anonymous
Date published: 2023-05-24

What percentage of vitamin c does this contain?

Asked by: Anonymous
30%
Answered by: Anonymous
Date published: 2023-03-04
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