Dunkin’ Donuts announced today that it’s planning to remove titanium dioxide, a whitening agent often used in toothpaste and sunscreen as well as other products, from all powdered sugar used on its doughnuts.
Little is known about how nanoparticles — ultra-small particles that are so teeny that they can have different physical properties than “macro” sized particles. For example, says Consumer Reports, carbon becomes 100 times stronger than steel, aluminum turns highly explosive, and gold melts at room temperature. What do titanium dioxide or zinc oxide do? Well, whatever it is — it may be in your sunscreen without your knowledge.