Medik8’s cult-favourite vitamin C serum, featuring stabilised vitamin C that is gentle on sensitive skins and vitamin C-beginners, yet effective in delivering visible brightening results.

Up to 6 months supply from a full size bottle (2 months' supply from a travel size).

A proven low- irritation formula, 96% of sensitive skins found C-Tetra to be gentle on their skin.*

Vitamin C minimises the appearance of fine lines and wrinkles over time, while helping to visibly balance and brighten the skin tone.

Tetrahexyldecyl Ascorbate (Vitamin C) & Vitamin 

Key Benefits:

• Daily Glow

  The silky jojoba oil-infused serum works to effortlessly give skin a boost of radiance, promoting a visible healthy glow in as little as 7 days.*

• Antioxidant Power

  Vitamin C and E provide daily protection from harmful free radicals generated by sun exposure, which can cause premature skin ageing.

• Gentle yet Effective

  Tetrahexyldecyl ascorbate is a stabilised, gentle form of vitamin C which makes it perfect for those new to vitamin C, or sensitive skins that don’t want to compromise on results.

• Looking for more power?

  Check out C-Tetra Luxe, with double the concentration of vitamin C as C-Tetra and additional brightening and nourishing ingredients for supercharged results.

  ^{*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.}