clean makeupPFAS in Mascara, Foundation, and the "Forever Chemicals" Conversation You're MissingPFAS — the "forever chemicals" — have been detected in waterproof mascara, long-wear foundation, and lipstick. They're added for smoothness, water resistance, and that just-out-of-the-tube glide that lasts twelve hours. They don't break down in your body, and they don't break down in the water supply. The fix is small but specific: look for products that explicitly state "PFAS-free," because U.S. labels almost never spell out PFAS by name.