Just because we are applying makeup containing titanium dioxide as one of the ingredients does not equate sufficient coverage. Instead of relying on mineral makeup, try layering it over your daily sunscreen instead.

Titanium dioxide nanoparticles have also been found in human placentae and in infant meconium, indicating its ability to be transferred from mother to fetus. 

Authors like to thank Sebastián García (LAMARX) for spectra acquisition, Carolina Leimbruguer for her support with TEM images and Yanina Altamirano, Nicolas Jaime and Javier Reparaz for animal care assistance.