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C-Tetra Vitamin C Serum



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Fight visible signs of ageing, restore radiance and repair free radical damage with the new and improved Medik8 C-Tetra. This serum is stronger than the previous C-Tetra formula, with 100% stable Vitamin C that remains potent and highly effective until you've finished the bottle!

Ultra Light with a refreshing citrus scent, the antioxidant infused serum absorbs rapidly into the skin leaving it hydrated, bright and refreshed.

Key Ingredients:

  • Tetrahexyldecyl Ascorbate – A lipid-soluble form of vitamin C that provides exceptional antioxidant protection from harmful free radicals, while helping prevent the appearance of ageing for a youthful complexion.
  • Vitamin E – A lipid-soluble antioxidant that is naturally present in the skin. Vitamin E protects the skin from free radicals and is regenerated by vitamin C for optimum power.

Good to know:

 Cruelty Free
Vegan Friendly
Synthetic Colour Free
 Artificial Fragrance Free
 Alcohol Free
Official Medik8 Stockist

Additional information

Weight 88 kg
Dimensions 50 × 35 × 115 cm



Restore radiance and fight visible signs of ageing with C-Tetra. Using powerful antioxidants including Liquid Vitamin C and Vitamin E your skin with be protected from pollution-induced damage protecting the skin and preventing the skin from premature ageing.

● Contains Vitamin E to shield the skin from aggressive environmental factors (free radicals) which can cause premature skin ageing.
● Contains Vitamin C which brightens and assists in improving uneven skin tone
● Evens and brightens complexion
● Hydrating dry, dull skin
● Citrus scent
● Reduces the appearance of fine lines and wrinkles


Dehydrated Skin, dry, sun damaged skin.
Fine lines and Wrinkles


C-Tetra® Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Citrus Grandis (Grapefruit) Peel Oil, Limonene. C-Tetra® + Intense Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis (Grapefruit) Peel Oil, Ethyl Linoleate, Passiflora Edulis (Maracuja) Seed Oil, Tocopheryl Acetate, Panax Ginseng Root Oil, Olea Europaea (Olive) Fruit Oil, Helianthus Annuus (Sunflower) Seed Oil, Prunus Armeniaca (Apricot) Kernel Oil, Prunus Amygdalus Dulcis (Sweet Almond) Oil, PPG-12/SMDI Copolymer, Limonene.


After cleansing in the morning, massage 4 drops across the face, neck and décolletage. Leave to absorb before applying moisturiser.

Product Type

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Skin Concern



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