maybecorrect·3 年前·議論Correcting myself, I was thinking of Zinc Oxide. But it's still pretty inert. I wouldn't want a plate of it, but whatever level of toxicity it possesses, it is low enough that it requires careful study to detect.
maybecorrect·3 年前·議論I'm pretty sure titanium dioxide is pretty inert. It's a primary ingredient in sunscreen and diaper cream.Otherwise, I agree with your point.