Oregon Esthetics Law Practice Exam 2026 - Free Esthetics Law Practice Questions and Study Guide

Alpha hydroxy acids are tightly regulated because higher concentrations increase the risk of skin irritation and burns, so the rules set a safety ceiling. In Oregon esthetics regulations, formulations containing AHA cannot exceed 30 percent. That makes 30 percent the prohibited concentration (anything above that is not allowed in any formulation). Lower concentrations are typically permitted under proper protocols, while stronger levels like 40 percent would be outside the allowed range.