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1. Introduction

We apply titanium dioxide to our skin through sunscreens, makeup, lip balms, nail polish, and other cosmetic products. 

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

Then, there’s ultrafine-grade, also known as nanoscale titanium dioxide. This is used for its ability to scatter lightly as an ultra-fine powder. This gives it the ability to lightly absorb into the skin while providing a bit of transparency. Below, we’ll go more into the cosmetic uses of these two forms of titanium dioxide.