Skincare Decoded: Revised and Expanded: The Practical Guide to Beautiful Skin

by Victoria Fu

For effective daily upkeep, here’s what to look for on labels: 5–10% glycolic acid > 8% lactic and mandelic acids 0.2–2% salicylic acid 10% gluconolactone The product’s pH: For AHA/PHA products, the lower the pH, the better it works.