How often should I use a chemical exfoliant?

Most verified-purchase reviewers describe starting two or three times a week and increasing only if their skin tolerates it. Daily-use liquids and toners are formulated to be milder than high-percentage peels; products like 30% AHA peels are explicitly intended for occasional use. Over-exfoliation, redness, and stinging are the most commonly reported problems when people ramp up too fast.