The Medik8 C-Tetra Serum delivers powerful antioxidant protection against environmental stressors while minimising the look of uneven skin tone for a visibly brighter finish. Infused with a stable form of vitamin C, the lightweight serum helps to reduce the appearance of unwanted pigmentation. Vitamin E enhances the formula to nourish the skin with a potent burst of moisture, subsequently plumping the appearance of fine lines for a smoother-looking finish. The brightening serum leaves skin looking more radiant and supple in just seven days*. *Proven via independent consumer study on C-Tetra conducted over 4 weeks on 52 participants with sensitive skin Proven Results: After seven days the skin appears more radiant* After seven days the skin is visibly brighter and smoother * 96% of sensitive skin types agreed C-Tetra was gentle on the skin* After four weeks skin looks visibly reduced fine lines and dark spots* 90% agree skin feels instantly softer* *Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.