C-Tetra is Medik8’s original, cult-favourite vitamin C day serum, and a lovely place to start if you are new to vitamin C.
It is formulated with 7 percent tetrahexyldecyl ascorbate (THD ascorbate), an oil-soluble, super-stable form of vitamin C that stays potent throughout use and is gentle enough for sensitive skin. It is paired with co-antioxidant vitamin E for added protection.
Used each morning, C-Tetra helps promote a visibly brighter, more radiant complexion while softening the look of fine lines and wrinkles and defending the skin against environmental stressors.
The lightweight, jojoba-based formula has a fresh citrus scent and absorbs quickly, leaving skin looking refreshed.
As part of Medik8’s CSA approach, pair it with sunscreen in the morning. Apply after cleansing, before your moisturiser.