Clearly Corrective Dark Spot Solution 30ml from the Kiehl's collection. The is the first Kiehl's serum that promotes youthful clarity while helping to reduce the appearance of dark spots, discolorations and hyper-pigmentation. This brilliantly effective year-round solution for more even looking skin tone and overall clarity is enriched with activated vitamin-C, peony extract and white birch extract. Directions for use: For best results apply this serum to the face both day and night.