Romanian Painted houses
Titanium dioxide is mostly used in paint, but has many other applications. Because it is non-toxic, it is also used as a colouring agent in foods, in cleaning agents and toothpaste has a white colour because of this mineral. It has a very high refractive index, meaning it scatters back most of the light. In fact, only diamond has a higher refractive index. This property gives titanium oxide its most important asset: it has incredible whitening powers.