@Donald Drumpf, it's certainly possible that it's like a clotting device so that you don't continue to bleed or infect the wound while you wait to be treated.
That can't be real just yet to the public. Medical institutes will be fighting over the rights for it for mass profits.
More like they prob just put skin coloured paint with some clogging agent to stop you from bleeding. Now that has been produced.
Cool. Do they make one for feelings