Tattoos used to mean that you were tough! If you can sit in a chair for hours with that pain, you’re a badass. But now, you don’t have to be. Scientists at Georgia Tech came up with permanent painless tattoos. Their version doesn’t use one needle, it uses thousands of microscopic ones on a patch, so small you can’t feel them. The needles aren’t even metal; they’re made of tattoo ink that’s strong enough to get through your skin then dissolves. So, are you brave enough to get one now?

https://www.cell.com/iscience/fulltext/S2589-0042(22)01286-X