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With their tried-and-tested CSA philosophy a hard-working marriage between vitamin C with sunscreen by day, and vitamin A by night Medik8 seeks to create simple routines that result in healthy, beautiful skin for life. The goal is to uncloak the mystery surrounding age-defying skin care with results-driven products that dont compromise on ethics. After creating an anti-redness product for his sister, Medik8s founder Elliot Isaacs fell in love with cosmeceuticals, paving the way for the C-Tetra Eye serum we have today. Its always important to look after the delicate eye area, as its one of the first areas to lose vitality and give way to the classic tell-tale signs of ageing. Thats where the award-winning C-Tetra Eye comes in with a healthy dose of vitamin C and vitamin £ to brighten, smooth and hydrate, this lightweight and fast-drying formula keeps your contours looking and feeling good!
C-Tetra Eye is specially formulated to brighten, hydrate, smooth and rejuvenate, all while preventing free radical damage and reducing irritation. With just two hard-working hero ingredients tetrahexyldecyl ascorbate and vitamin E you can trust this bottled beauty to give results without any alcohol, artificial fragrances or parabens getting in the way of your precious eye contour.
An effective form of the famous vitamin C, tetrahexyldecyl ascorbate penetrates the skins defensivelipid barrier with ease, allowing you to get all of the benefits of vitamin C delivered deep down into the skin. Lightweight and fast-absorbing, the vitamin C in this formula also tackles environmental free radicals by pumping your skin with antioxidants bolstering the defences of your skin cells. This helps to prevent the creation of premature damage - think: fine lines and wrinkles - all while boosting collagen production to make your eyes appear brighter, too. Vitamin E also contains antioxidants, and complements vitamin C perfectly they work together to boost their levels of efficiency, keeping skin protected throughout the day. Name a better duo, well wait! Vitamin E also soothes and nourishes, reducing irritation and revitalising tired eyes. The all-natural, citrusy aroma doesnt hurt, either!
After cleansing in the morning, use the spatula-style applicator to sweep a small amount of C-Tetra Eye across the under-eye and brow bone, avoiding eyelids. Gently blend.
Please note: the visual and product name listed may differ to the packaging received due to product updates across the range. Rest assured, the formula and great results will remain the same.
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Tocopheryl Acetate, Citrus Grandis (Grapefruit) Peel Oil, Limonene, Citral, Linalool, Geraniol.
- Medik8
- 7ml
Transparency lies at the heart of our philosophy which is why we have partnered with tech-platform – Provenance – to cut through the industry ‘noise’ and equip you with key facts that matter. A 'proof point' with a green tick means a third party has verified the accuracy of the statement whereas no green tick means that there isn't independent confirmation (yet!), but that the brand has still supplied substantiating evidence (which you can view yourself). Discover the proof points for this product below.

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With their tried-and-tested CSA philosophy a hard-working marriage between vitamin C with sunscreen by day, and vitamin A by night Medik8 seeks to create simple routines that result in healthy, beautiful skin for life. The goal is to uncloak the mystery surrounding age-defying skin care with results-driven products that dont compromise on ethics. After creating an anti-redness product for his sister, Medik8s founder Elliot Isaacs fell in love with cosmeceuticals, paving the way for the C-Tetra Eye serum we have today. Its always important to look after the delicate eye area, as its one of the first areas to lose vitality and give way to the classic tell-tale signs of ageing. Thats where the award-winning C-Tetra Eye comes in with a healthy dose of vitamin C and vitamin £ to brighten, smooth and hydrate, this lightweight and fast-drying formula keeps your contours looking and feeling good!
C-Tetra Eye is specially formulated to brighten, hydrate, smooth and rejuvenate, all while preventing free radical damage and reducing irritation. With just two hard-working hero ingredients tetrahexyldecyl ascorbate and vitamin E you can trust this bottled beauty to give results without any alcohol, artificial fragrances or parabens getting in the way of your precious eye contour.
An effective form of the famous vitamin C, tetrahexyldecyl ascorbate penetrates the skins defensivelipid barrier with ease, allowing you to get all of the benefits of vitamin C delivered deep down into the skin. Lightweight and fast-absorbing, the vitamin C in this formula also tackles environmental free radicals by pumping your skin with antioxidants bolstering the defences of your skin cells. This helps to prevent the creation of premature damage - think: fine lines and wrinkles - all while boosting collagen production to make your eyes appear brighter, too. Vitamin E also contains antioxidants, and complements vitamin C perfectly they work together to boost their levels of efficiency, keeping skin protected throughout the day. Name a better duo, well wait! Vitamin E also soothes and nourishes, reducing irritation and revitalising tired eyes. The all-natural, citrusy aroma doesnt hurt, either!
After cleansing in the morning, use the spatula-style applicator to sweep a small amount of C-Tetra Eye across the under-eye and brow bone, avoiding eyelids. Gently blend.
Please note: the visual and product name listed may differ to the packaging received due to product updates across the range. Rest assured, the formula and great results will remain the same.
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Tocopheryl Acetate, Citrus Grandis (Grapefruit) Peel Oil, Limonene, Citral, Linalool, Geraniol.
- Medik8
- 7ml
Transparency lies at the heart of our philosophy which is why we have partnered with tech-platform – Provenance – to cut through the industry ‘noise’ and equip you with key facts that matter. A 'proof point' with a green tick means a third party has verified the accuracy of the statement whereas no green tick means that there isn't independent confirmation (yet!), but that the brand has still supplied substantiating evidence (which you can view yourself). Discover the proof points for this product below.
Customer Reviews
Top Customer Reviews
Thanks for sharing your thoughts! Please remember that results will vary from person to person. We're proud to say that all customer reviews are independent, authentic and do not represent the views of Cult Beauty or The Hut Group.
Good buy
I like to apply it at night along with crystal retinal from the same brand. It comes in a very small quantity but lasts a long time. it's really worth it.
Reviewer of the Month
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So light
great under eye serum, i use it every night before applying my eye cream. I have dark circles and fine lines ,it helps a lot! i notice the difference the nights i don't use it!
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New favourite!
It is such a good eye serum! I have used it only for couple of mornings but already my eye areas feel better. It can be best seen when applying eyeshadow.
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Second bottle I use
My skin under eyes is very dry and with this product as a serum (using a eye cream afterwards) I feel it hydrated and luminous. I used a first bottle and I loved it. When I didn't have it, I missed it so it's back in my skin routine again. Oily formula but very well and fast absorbing.
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Just a small drop is enough
Just a small drop of this serum is enough to feel rejuvenated. The skin around my eyes is smother and brighter. I will definitely repurchase again.
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Top eye serum
Great eye serum in oil texture. Leaves the undereye area simply smoother and hydrated. I use it before another eye cream every morning as it is not irritating.
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Fast Absorbing, Non-Irritating
I use this for protection and prevention, as I don't have any particular concerns around my eye area. The texture is lovely and absorbs really quickly, and works well under eye cream and sunscreen. A definite repurchase.
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Good product
Although I expected something more from it, from all the reviews I've read and heard, I'm liking it
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Nice under the eye product
Not irritating, excellent under makeup, and for further layering. Would need to use it a bit more for more solid feedback
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Great
I love this eye serum so much, never used something similar before. It is so smoothing and hydrating
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