NEW IN BOX • FULL SIZE 150ml / 5 fl oz NOTE: There is a mark on the bottom of the outer carton (pictured) box never opened. Gluconolactone (PHA) 10%: A polyhydroxy acid that provides gentle yet advanced exfoliation, clarifying acne-prone skin and helping to reduce the look of uneven skin texture and tone. Glycolic Acid (AHA) 5%: An alpha hydroxy acid that helps improve the look of radiance, uneven skin tone and smoothness. Salicylic Acid (BHA) 0.5%: A beta hydroxy acid that clears up and helps prevent acne, unclogging pores and reducing excess surface oil.