KEY BENEFITS
Circular Chevron Icon
  • Circular Checkmark Icon
    Increased Skin Youthfulness

    Proven to simultaneously smooth the look of fine lines and wrinkles while visibly boosting skin glow and radiance.

  • Circular Checkmark Icon
    Brighter, More Even Complexion

    Proven to visibly brighten the skin tone, for a more even and healthy-looking skin appearance.

  • Circular Checkmark Icon
    Lightweight Nourishment

    This jojoba (pronounced 'huh-hoh-ba') seed oil-based formula delivers effective yet non-greasy nourishment for visibly softer and comforted skin.

PROVEN RESULTS
Circular Chevron Icon
  • 7 days to restored skin radiance*
  • 7 days to visibly brighter smoother skin*
  • 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.

HOW TO USE
Circular Chevron Icon
how to use Zoom In Icon

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.

If you're new to C-Tetra® we recommend a patch test at least 24 hours in advance. Learn how to patch test here.

LOVED & RECOMMENDED
Circular Chevron Icon
  • Endorsement Icon 1

    Softens visible ageing concerns while being tolerable for all.

    BRIDGET MARCH
    Digital Beauty Director - Harper's Bazaar
  • Endorsement Icon 2

    My wrinkles have almost disappeared!

    TATIANA S
    Verified Medik8 Customer
KEY INGREDIENTS
Circular Chevron Icon
  • Ingredient Icon 1
    7% Stabilised Vitamin C (tetrahexyldecyl ascorbate)

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

  • Ingredient Icon 2
    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 Ingredients
THE SCIENCE BEHIND THE FORMULA
Circular Chevron Icon
Un portrait d’un scientifique et fondateur Medik8 portant une blouse de laboratoire siglée, représentant la recherche et l’innovation derrière la formulation.

Ultra-gentle & perfect for visibly radiant skin

DANIEL ISAACS Chief Product Officer

It is exceptionally difficult to formulate a vitamin C serum that will retain its power over time. That's because vitamin C is notoriously unstable, meaning its effectiveness can be compromised when it comes into contact with light, heat or air.

That's why we have chosen to formulate C-Tetra with an extremely stable form of vitamin C (tetrahexyldecyl ascorbate), so you can be sure that your vitamin C is still as potent and effective 12 months after you first opened it.

GOOD TO KNOW
Circular Chevron Icon
  • Circular Checkmark Icon NO ARTIFICIAL FRAGRANCE
  • Circular Checkmark Icon NO SYNTHETIC COLOURS
  • Circular Checkmark Icon PARABEN FREE
  • Circular Checkmark Icon CERTIFIED BY THE VEGAN SOCIETY
C-Tetra®
HEAR FROM OUR COMMUNITY