Popular gel nail ingredient banned in Europe due to cancer risk is legal in America: Here’s what US shoppers should know about it

The European Union will ban TPO in nail polishes from September 2025. TPO is a chemical used to harden gel manicures. The EU considers it a potential health risk based on animal studies. The ban includes manufacturing, selling, and using TPO products. In the United States, TPO remains legal. Consumers may want to inquire about polish ingredients.