This is a concentrated formula for those who're used to using acids. Apply as a 10-minute mask, 1-2 times per week in the evening. AHA 30% + BHA 2% Peeling Solution refines skin's texture and combats congestion Alpha-hydroxy acids (AHAs) exfoliate the skin?? uppermost layer of dulling dead cells while beta-hydroxy acids (BHAs) 'unclog' blocked pores to promote clarity and restore radiance. Proven to promote smoother, younger looking skin by increasing the rate of cell renewal.