Pigmentclar Anti-Aging Dark Spot Correcting Serum contains a phE-Resorcinol, gingko and ferulic acid complex that helps to reduce dark spots and even out skin tone. After a few uses, you’ll also notice a smoother complexion of your general skin tone, thanks to a boost of soothing niacinamide and micro-exfoliating LHA lipo hydroxy acid (LHA). With consistent application in the morning and in the evening., you can expect a visible reduction in the appearance of dark spots after four weeks. With ongoing use, expect some better results.