In Europe a number of bodies ensure that the substances available to the public are safe in the applications in which they are used. Aside from national bodies, the European Union’s REACH legislation is a framework to monitor the chemicals we use to ensure their safety. Industry is obliged to register substances under REACH and have a duty to ensure any potential risks from substances are managed. Similarly, the European Food Safety Authority (EFSA) examines the substances in our foods, including titanium dioxide, and gives each additive an ‘E-number’. For TiO2 that number is E171. It also sets the amount we can safely consume every day through food.