Kiehl's Clearly Corrective Dark Spot Solution is a facial serum that helps visibly correct dark spots and improve overall clarity. This effective facial serum boosts clarity and visibly brightens skin. Formulated with Activated C, White Birch and Peony Extracts, this serum helps correct and even skin's appearance while visibly reducing a wide spectrum of dark spots. With daily use, this serum helps even and brighten skin over time. Dermatologist-tested for safety.