WEEKEND GLOW BRIGHTENING SERUM 1.0FLOZ. Benefits: Brightening Vitamin C serum to boost dull skin. Delivers a radiant glow to skin. Daily serum for dull and uneven skin. Free from parabens, silicones, and sulfates. Packaging made with 30% PCR (post-consumer recycled) plastic. Features: Your everyday serum for brighter, more even skin tone.. Vitamin C brightens skin tone while licorice root helps even out overall tone, and niacinamide delivers hydration and even more radiance.. Key Ingredients: VITAMIN C to brighten skin. LICORICE ROOT EXTRACT to even out overall skin tone. NIACINAMIDE to help hydrate and enhance radiance.