Kiehl’s Since 1851 Ultra Pure High-Potency Serum 9.8% Glycolic Acid 1 oz.- 4633961

What It Is:A concentrated 9.8% Glycolic Acid serum made with only 7 ingredients that visibly smoothes skin texture and boosts skin’s glow.What It Does:With 9.8% Glycolic Acid, this serum is formulated with just seven ingredients to help visibly refine and smooth skin’s texture and boost skin’s glow. Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and smoothing effect.How To Use It:In the evening