This product is used to add whiteness to many foods, pharmaceuticals, paints, and papers. It is has a variety of forms including rutile, brookite, and anatase (the last of which is what is used for our purpose). The size of the titanium dioxide particles used in our product is in the 5-10 nano particle size (or 5-10 billionths of a meter). It is no wonder you can’t see this product when it’s on the surface! Titanium dioxide is approved for use by the FDA and is considered a chemically stable and environmentally “friendly” and safe substance.