A brown bottle labeled "C-Tetra® Eye" from Medik8, topped with a black cap, stands against a white background. Its contents—a potent vitamin C serum for fine lines and wrinkles—are spilled underneath.
Under warm lighting, a person with smooth skin highlights Medik8's C-Tetra® Eye benefits, showcasing its ability to brighten dark circles and reduce fine lines and wrinkles.
A small amber bottle labeled "Medik8 C-Tetra® Eye" delivers vitamin C and E benefits to smooth, brighten, and nourish the delicate eye area while targeting fine lines and wrinkles.
A display of Medik8 skincare products showcases their vitamin C serum collection, featuring the targeted C-Tetra® Eye, C-Tetra Luxe, C-Tetra Facial Cream, and versatile C-Tetra serum with droppers, all elegantly arranged on white platforms.
Skincare routine image showing a four-step process: cleanse, tone, apply vitamin C serum, and sunscreen. Features expert advice on treating fine lines by pairing Medik8's C-Tetra® Eye with C-Tetra Luxe face serum for a radiant morning glow.
A brown bottle labeled "C-Tetra® Eye" from Medik8, topped with a black cap, stands against a white background. Its contents—a potent vitamin C serum for fine lines and wrinkles—are spilled underneath.
Under warm lighting, a person with smooth skin highlights Medik8's C-Tetra® Eye benefits, showcasing its ability to brighten dark circles and reduce fine lines and wrinkles.
A small amber bottle labeled "Medik8 C-Tetra® Eye" delivers vitamin C and E benefits to smooth, brighten, and nourish the delicate eye area while targeting fine lines and wrinkles.
A display of Medik8 skincare products showcases their vitamin C serum collection, featuring the targeted C-Tetra® Eye, C-Tetra Luxe, C-Tetra Facial Cream, and versatile C-Tetra serum with droppers, all elegantly arranged on white platforms.
Skincare routine image showing a four-step process: cleanse, tone, apply vitamin C serum, and sunscreen. Features expert advice on treating fine lines by pairing Medik8's C-Tetra® Eye with C-Tetra Luxe face serum for a radiant morning glow.
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C-Tetra® Eye

  • Smooth
  • |
  • Brighten
  • |
  • Nourish
Lipid Vitamin C Radiance Serum
Discover a visibly brighter, smoother, and energised eye area each morning with C-Tetra Eye.

Harnessing the proven age-defying powers of Medik8's C-Tetra facial serums, C-Tetra Eye is expertly designed to deliver powerful visible results while being lightweight, fast-absorbing and gentle enough for your delicate eye area.

Formulated with stabilised tetrahexyldecyl ascorbate (pronounced 'tetra-hexul-deckul as-CORR-bate'), this eye-specialist vitamin C serum works to smooth the look of fine lines and wrinkles around the eyes while visibly brightening and deeply nourishing for a more revitalised eye appearance overall.
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Reasons to shop Medik8

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Key Benefits
Fine Line Reduction

Visibly smooths fine lines and wrinkles around the eyes for a firmer, more youthful-looking eye area.

Vitamin C Power For Delicate Eyes

The stable formula delivers the renowned smoothing, brightening and antioxidant benefits of vitamin C while being gentle and lightweight enough for the delicate eye area.

Visibly Brighter & Awakened Eye Area

Works to visibly brighten the skin tone, improving the look of under eye darkness and discolouration.

How to Use

HOW TO USE

After cleansing in the morning, apply a small amount across the brow bone and under-eye area - avoiding the eyelids.

Key Ingredients
14% Stabilised Vitamin C (tetrahexyldecyl ascorbate)

A low-irritation form of vitamin C that delivers exceptional antioxidant protection against harmful free radical damage while supporting collagen production for a visibly even, more youthful-looking complexion.

Vitamin E

A powerful antioxidant that provides additional antioxidant protection against the ageing effects of free radicals. It also helps to boost the power of vitamin C for optimum visible results.

Full List of Ingredients
C-Tetra® Eye
Lipid Vitamin C Radiance Serum

Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Tocopheryl Acetate, Citrus Grandis (Grapefruit) Peel Oil, Limonene, Citral, Linalool, Geraniol.

*Although we try our best to ensure this list of ingredients is accurate there may be product upgrades from time to time, or slight variants between different regions based on local laws, meaning the only definitive ingredient list is that which is printed on the product packaging.
  • No artificial fragrance
  • No synthetic colours
  • Paraben free
  • Alcohol free
  • Certified by the vegan society
  • Used in professional treatments
Experts Recommended

Leaves the eye area visibly youthful and awakened.

DANIEL ISAACS
Chief Product Officer

Gentle...and layers well beneath make-up.

ROBERTA SCHROEDER
Ecommerce Editor - Harper's Bazaar

I am delighted...my eye area appears more smooth and radiant

GAIL T
Verified Medik8 Customer

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Reviews

Frequently Asked Questions

What's the difference between C-Tetra Eye and C-Tetra / C-Tetra Luxe?
C-Tetra Eye is our stabilised vitamin C serum for the delicate eye area, while C-Tetra and C-Tetra Luxe are our stabilised vitamin C serums for the face. They work in perfect harmony to deliver vitamin C's renowned brightening, smoothing and antioxidant benefits across the face as well as the delicate eye area.
How do I use C-Tetra Eye alongside C-Tetra / C-Tetra Luxe?
After cleansing in the morning, apply C-Tetra Eye around the eye area. Follow by applying C-Tetra or C-Tetra Luxe across the rest of the complexion.
Can I use C-Tetra Eye alongside vitamin A formulas?
Absolutely. In fact we recommend it as part of our pioneering CSA Philosophy which champions vitamin C plus sunscreen by day, vitamin A by night as the simple secret to glowing, youthful-looking skin.
Can I use C-Tetra Eye if I'm pregnant or breastfeeding?
As a cosmetics company, we are unable to provide product advice in relation to medical conditions such as pregnancy. We would recommend discussing the ingredients with your GP or midwife before use. As general guidance, this product does not contain any ingredients which we would recommend to avoid during pregnancy, unless advised by your doctor.
C-Tetra® Eye
Full Size
Full Size