https://en.wikipedia.org/wiki/Talc#Safety
(Studies cited there don't quite prove that asbestos-free talc is carcinogenic...but the evidence is damning enough that no well-informed consumer would actually use talc. Even if they somehow had access to guaranteed-0.00000% asbestos talc.)
Also rather concerning - talc is GRAS by the FDA when used as an anti-caking agent in table salt at concentrations below 2%.