10% Vitamin C + 5% Niacinamide + Hyaluronic Acid Our salon strength concentrate delivers a stable form of Vitamin C along with Niacinamide + Hyaluronic Acid. An easily absorbed gel with immediate skin brightening and hydrating benefits. Your skins DNA is protected from UV, blue light and pollution induced damage. Over time your skin will look more youthful, the texture and pore size refined. Your complexion will be more even in tone, plump, radiant and glowing with health. If you have sensitive skin, start by using this product 1 x daily as directed. Your skin will get used to the stimulating effect of Vitamin C over the period of 2 weeks. You can then increase to a 2 x daily application.