Well, to answer my own question, it looks like the ingredient in question is potassium dichromate, which can cause cancer when inhaled. Now, my reasoning is that everything pretty much causes cancer, and there is probably very little potassium dichromate in this product, since it is the last ingredient. But to be on the safe side, don't be inhaling it either <img src="/images/graemlins/smile.gif" alt="" /> And I'd probably wash up very well after using it.
Just a safety note for all of you!