It's one of my favorite colognes: Eau de Gun Cleaning Solvent.
I read somewhere awhile back that it's a good idea to wear gloves when you clean your guns, especially if you do it very often, because the chemicals soak through your skin and get into your blood and they have some toxicity, even in such small amounts. And I guess if something is written it's true (especially if it's written on the internet, as Abraham Lincoln has been quoted on the internet as saying). I don't usually wear gloves though, unless I just want to keep my hands clean, and I don't know if I've ever suffered any toxic effects.