PCA Skin Intensive Brightening Treatment: 0.5% pure retinol night is specifically formulated for discoloration. This advanced pure nighttime retinol treatment features a delivery system often used in pharmaceuticals, yet entirely new to skincare. The patented Omnisome delivery system stabilizes and carries a unique blend of ingredients deeper into the skin for superior results. Retinol, niacinamide and hexylresorcinol help to produce radiance from within, while promoting an even skin tone. Additional actives smooth the skin’s surface, while niacinamide minimizes redness and the yellowing of the complexion. An overall glow and even skin tone is the outcome with nightly use of this new, breakthrough retinol formulation. Visible results have been seen in as little as four weeks.