Clearly Corrective™ Dark Spot SolutionKiehl's Clearly Corrective Dark Spot Solution adopts the Activated C formula, which can effectively attack deep set dark spots and even the skin tone. Product Features: It contains White Birch Extract, which helps restore hydration and nutrients to the dermis and epidermis layers of skin, and hence promotes the metabolism and blood circulation of skin. The addition of Peony Extract can eliminate the damage caused by free radical oxidation to skin,