Medik8 C-TETRA antioxidant vitamin C serum

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Expected delivery:
Thursday 11/5/2026
Thursday 11/5/2026

*Approximate for orders whose destination is the provincial capital. In other cases there will be a delay of 1 day.

Restore your skin's natural glow in just 7 days with C-Tetra, the vitamin C serum that's already a firm favorite.

With 7% tetrahexyldecyl ascorbate—an advanced, stabilized form of vitamin C— this lightweight serum visibly brightens dullness , evens skin tone, and smooths fine lines without irritation, even on sensitive skin.

Thanks to its combination with vitamin E, it offers a powerful antioxidant defense that fights free radicals and prevents premature aging. Its water-free formula guarantees maximum stability and effectiveness down to the last drop.

Light texture, fast absorption and visible results : C-Tetra is the essential step for brighter, more even and revitalized skin.

Benefits:

  • Increases the youthfulness of the skin

It has been proven to simultaneously smooth the appearance of fine lines and wrinkles while visibly boosting skin's brightness and radiance.

  • Brighter and more even complexion

It has been shown to visibly lighten skin tone, giving it a more even and healthy appearance.

  • Light nutrition

This jojoba oil-based formula provides effective, non-greasy nourishment for visibly softer, more comfortable skin.



How to use:
  1. In the morning, after cleansing, apply 4 drops to the face, neck and décolleté.
  2. Allow to absorb before applying sunscreen. We recommend Advanced Day Ultimate Protect.
Skin type
All skin types
Textures
Serum
Formulation
Parabens Free
Format
Doser
Ingredients
Vitamin C
Green beauty
Vegan
EAN
0818625024338
Skin type
All skin types
Textures
Serum
Formulation
Parabens Free
Format
Doser
Ingredients
Vitamin C
Green beauty
Vegan
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.

Main ingredients:

  • 7% stabilized Vitamin C (tetrahexyldecyl ascorbate)

A low-irritation form of vitamin C that provides exceptional antioxidant protection against damaging free radicals, while brightening and promoting collagen production for a visibly more even, youthful complexion.

  • Vitamin E

A powerful antioxidant that provides additional antioxidant protection against the aging effects of free radicals. It also helps enhance the power of vitamin C for optimal visible results.

Brand Safety Warning
Avoid contact with eyes. If the product gets into the eyes, rinse well with water. If irritation occurs, discontinue use. If irritation persists, consult a doctor. Use only as directed and on unbroken skin. Patch testing is recommended before use. See medik8.co/patch for detailed patch testing guidance. Keep out of reach of children.
Legal information of the brand
Pure Skincare Cosmeceutica SL, Pl. del Vapor, 15-16 C, 08915, Barcelona
https://puresc.com/
info@puresc.com

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FAQ Medik8 - C-TETRA antioxidant vitamin C serum

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What benefits does Medik8 C Tetra Serum Antioxidant Vitamin C offer?
Translated by Google
-14/09/2026
Its advanced antioxidant technology protects and revitalizes the complexion.
• It exerts a powerful illuminating action that evens out the tone of tired skin.
• Provides protective properties against environmental oxidative damage.
• Stimulates skin firmness, visibly reducing fine lines.
?
How is the daily administration of this antioxidant treatment prescribed?
Translated by Google
-18/03/2026
It is applied in the morning to clean, dry skin on the face and neck, gently massaging until fully absorbed before applying moisturizer.
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For which skin types and signs of aging is it prescribed?
Translated by Google
-05/01/2026
It is indicated for dull skin, lacking firmness, sunspots or incipient signs of photoaging that require an antioxidant shield.
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What is the biological mechanism of action of this vitamin C serum?
Translated by Google
-20/11/2025
It works by stabilizing ascorbic acid and fat-soluble vitamin C, penetrating the dermis to neutralize oxidants and stimulate collagen synthesis.
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