Nars Skin Treatments Brightening Serum This Brightening serum from nars is a fast-acting, lightweight serum that visibly brightens skin after only one application, immediately improving the appearance of dull complexions by promoting clarity and brightness. A more radiant and even skin tone is immediately attainable through a unique combination of Active Phytoseed Complex, powerful antioxidants and Fennel, revealing a luminous complexion and youthful glow. Benefits: Creates instantly brighter, more radiant skin, Helps protect against free radical damage.