Yes, we use titanium dioxide in nanometric form. Titanium dioxide is a mineral composed of titanium and oxygen in the form of a white powder. It has many applications in food or in cosmetics, especially for its white colouring properties and its ultraviolet filtration properties. The type of titanium dioxide used in cosmetics does not impact plankton in the aquatic environment. This type should not be confused with other types of titanium dioxide used in products other than cosmetics.