About CrOx being toxic:

Where did you get that from? To make this clear, we are talking about Cr2O3, and I couldnīt find anything about it being dangerous in the internet. In fact it is not claimed as irritating, toxic, flamable or anything. It doesnīt even solve in water or oil(It solves in some acids). As far as Iīm informed, it is as dangerous as sand (well, to you, not to your razor).

Kind regards,
tok