Perfluorooctanoic acid (PFOA) is a synthetic chemical used in various industrial applications, particularly in the production of non-stick coatings like Teflon. It belongs to a group of chemicals known as per- and polyfluoroalkyl substances (PFAS), which are known for their water- and grease-resistant properties. PFOA has raised environmental and health concerns due to its persistence in the environment and potential links to adverse health effects. It can accumulate in the human body and has been associated with issues such as liver damage and developmental problems. Regulatory agencies are working to limit its use and exposure.