
Facial Exfoliator Guide 2026: AHA vs BHA by Skin Type & The Retinol Combination That Damages Most People’s Skin Barrier
Most people are unknowingly combining retinol with AHA exfoliators — a pairing dermatologists say is the single most common cause of damaged skin barriers in 2026. This guide covers AHA, BHA and PHA by skin type, the exact over-exfoliation warning signs to watch for, and the safe protocol that prevents the retinol mistake doctors see most often in clinic.









