Titanium dioxide is a white pigment. It is <i>very</i> common - and used in two thirds of pigments.<p>It's also used in almost anything else colored in your life... I don't know why this paper would target face masks specifically apart to get more press interest.
This confirms a long-held fear of mine.<p>I wasn't sure what exactly it might be... but I was always concerned with these face masks breaking down over time and forcing me to inhale... something...<p>Turns out what we're inhaling is far worse than I imagined. I thought maybe some plastic fibers or something like that... not a known carcinogen.