This brightening serum contains a synergistic trio of powerful antioxidants: 12% vitamin C, 1.5% ferulic acid and 0.5% polydatin. Antioxidants protect against environmental stressors, while restoring glow and reducing signs of aging. Formulated with these three ingredients, this formula helps replenish the skin's antioxidant reservoir to address the appearance of early skin aging while helping skin fight damaging free radicals that form during the day due to external aggressors.