Zinc oxide is a very white powder that makes a very opaque paste when mixed with water or oils.
It is used as a sunblock, and in toothpastes and cosmetics as a colorant.
Zinc oxide is used in many of the same products as titanium dioxide.
zinc oxide: InChI=1/O.Zn/rOZn/c1-2
titanium dioxide: InChI=1/2O.Ti/rO2Ti/c1-3-2