Two years ago, the EU banned the use of the white food colourant titanium dioxide (E 171), because of concerns regarding genotoxicity. Yet, products with this food additive may still be found on the European market. Several institutes outside the EU do not share EU concerns. Therefore, titanium dioxide remains being used in food products outside the EU. As a result, imported products are a potential source of illegal presence of titanium dioxide in food on the EU market.