This bill bans cosmetic manufacturers from intentionally adding PFAS chemicals (per- and polyfluoroalkyl substances) to their products starting January 1, 2025. PFAS are man-made fluorinated chemicals used in various cosmetics for water resistance and other functional properties, but they persist in the environment and human body, raising health concerns. The ban applies to any PFAS intentionally added by manufacturers to cosmetic ingredients, raw materials, products, or packaging that serves a functional purpose, as well as intentional breakdown products of added chemicals. The legislation amends the Federal Food, Drug, and Cosmetic Act to classify cosmetics containing intentionally added PFAS as adulterated, which means they cannot legally be sold in the United States. The bill affects cosmetic companies and manufacturers, who will need to reformulate products to remove these chemicals before the 2025 deadline.