AHA peeling overnight with a pH of 4.0 is based on biomimetic peptide technology and the intense action of AHAs. Perfection Peptides and Glycolic Acid stimulate the skin's rejuvenation processes overnight. The peel promotes the skin's natural exfoliation process and removes dead and uneven looking surface skin cells. with regular use it lends the skin a smoother feeling, more even and refined looking appearance. For visibly rosier complexion when you wake up in the morning.