All non-stick coatings contain PTFE, the abbreviation for polytetrafluorethylene, a plastic polymer. It is a slippery ingredient, made up of molecules of tetra fluoro ethylene that only contain carbon and fluorine. The non-stick coating is not attacked by acid or alkaline bases and remains stable on cooking. The French, European and American health authorities have approved the use of PTFE non-stick coatings for kitchenware. In fact, it is a substance that does not produce any chemical reaction when it comes into contact with food, water or cleaning products. In the event of absorption, it is completely harmless for the body. It passes through the body without being absorbed, like any other fibre. In fact, the non-stick coating is so safe from a health point of view that it is often used by the medical profession to coat pacemakers and tiny tubes replacing arteries.