PFAS are a group of chemicals made of perfluorinated and polyfluorinated alkyl substances. There are about 3,000 chemicals in the group. These chemicals have fluorine and carbon atoms bonded strongly together. PFAS in the environment are persistent - they’re known as forever chemicals. PFAS are in products made to resist heat, grease, stains and friction.
Nonstick pans, paints, degreasers, and fire-fighting foam, as well as consumer products like clothing, cosmetics, upholstery and carpet, and grease-resistant food packaging often have PFAS.