Do you have problems with blemishes, acne or pigmentation? Then Vitamin C should be your best friend. Kiehl's Clearly Corrective™ Dark Spot Solution is a unique formula that comes in a transparent glass bottle and contains... 3-O-Ethyl Ascorbic Acid. Today I want to share with you my story on how Kiehl's Clearly Corrective™ Dark Spot Solution helped me with my skin problems in just a month.