PFAS, or per- and polyfluoroalkyl substances, are a class of man-made chemicals used in a variety of consumer goods that can persist in the environment indefinitely (earning them the nickname “forever chemicals”). PFAS and are used in everyday products such as nonstick cookware, water resistant clothing, and even dental floss and cosmetics. More recently, manufacturers are utilizing these chemicals in fiber-based compostable food ware packaging to make them water and grease resistant.