Those with phobias of needles can now get tattoos without having to worry. Scientists have developed a way to get a permanent tattoo without going under the needle and suffering through hours of pain.

Popular YouTube channel Smarter Every Day gives a tattoo machine its close-up in the video above (the slow-mo action starts at 3:10). As you can see, the machine actually has many-pointed needles ...

Nickel and chromium may shed from tattoo needles and cause allergies, a study found. By Nicholas Bakalar Tattoos can cause allergic reactions, and tattoo needles, even clean ones, may be partly to ...