Medik8 C-Tetra Brightening Oil Serum helps combat wrinkles and fine lines, boosts skin radiance, and promotes a visibly more even-looking complexion. The formula contains 7% tetrahexyldecyl ascorbate, a stabilized yet potent form of vitamin C that ensures efficacy while minimizing the risk of irritation. Vitamin C helps neutralize free radicals and protects against environmental aggressors that contribute to premature aging. It also plays a role in brightening the skin and evening out its tone, reducing visible discoloration and improving overall clarity. A perfect choice for those using vitamin C for the first time or for individuals with sensitive skin.