This stuff is dangerous. If you get any on your hands you will have to remove skin to get it off, to me it's not worth the continued risk so I threw mine away after the first (unfortunate) experience with it. The black stains over my hands, which no solvent would remove, even after 30 minutes of scrubbing, will have to wear off, I hope. But there should be a very clear warning about this included with each purchase, not to do so is irresponsible.