No, at Mme L'Ovary, we're proud to offer menstrual underwear certified without PFAS by the external labratory QUIMA. PFAS, also known as "forever chemicals," are synthetic chemical compounds that can have harmful effects on human health and the environment. We're aware that many period underwear brands on the market use PFAS, and we're firmly committed to providing a safer and healthier alternative. We believe that all menstruating people deserve access to menstrual products that honour their bodies, without compromise ♡ * Certified in april 2023 - Test : US States Requirement, Per-and Polyfluoroalkyl Substances (PFAS) Content (Total Fluorine Method).