I shall definitely refrain from applying it to my tongue.
Tried some of the thin stuff, on some tin, 1/600th scale aircraft, since supposedly it's better for metal. Didn't really work for me. Perhaps I was letting it dry out too quickly before getting the parts together, or it just doesn't work - might have been getting a wee bit too much too, on the pieces, but I don't think so.
Switched to the gel, and it too, took some time. Apparently, you have to hold the small pieces forcefully together in place, for 15 seconds, as it dries. Hard to do with some very small minis. Need to find my old tweezers again for that.
Did seem to work better, at least for me, even though the back of the package says the thin stuff is better for gluing metal. Not sure about that, but I think the get stuff may have worked.
Will have to see, as I prep them for painting, going forward.