PFAS are, in many ways, remarkable molecules. Even a thin layer can repel water, oil, and dirt. They are also highly resistant to heat and UV light, which makes them ideal for coating breathable outdoor clothing, stain-resistant carpets, disposable tableware, irons, and nonstick pans. Industrially, PFAS are used as lubricants, surfactants, wetting agents, in chrome plating, and in fire-fighting foams. The list goes on—PFAS are nearly everywhere.