Medik8 C-Tetra is a highly stable vitamin C serum to help combat sun-induced damage to the skin and maintain collagen production, increase the skin's elasticity and density, as well as improve the skin’s texture and brighten the complexion.

Formulated with 3% Tetrahexyldecyl Ascorbate, the most potent and highly stable derivative of Vitamin C currently available, and conditioning Vitamin E, this multi-function serum provides a moderate level of protection against free radicals and environmental stressors, stimulates collagen production and repairs visible sun damage to create a more radiant, youthful looking complexion.