Three aspects determine the performance of titanium dioxide as pigment and UV absorber.

Lithopone

But despite all these cries of alarm, five years on from the original study no further testing into the safety of Titanium Dioxide in our food supply

It's hard to determine the total amount of food products that have titanium dioxide because federal regulations don't require all producers to list its use on ingredient labels, but the list of foods containing the substance certainly doesn't end with Skittles.