So What Exactly Is a Tattoo?

A tattoo is a puncture wound, made deep in your skin, that's filled with ink. It's made by penetrating your skin with a needle and injecting ink into the area, usually creating some sort of design. What makes tattoos so long-lasting is they're so deep.

Tattoos used to be done manually — that is, the tattoo artist would puncture the skin with a needle and inject the ink by hand. Though this process is still used in some parts of the world, most tattoo shops use a tattoo machine these days.

A tattoo machine is a handheld electric instrument that uses a tube and needle system. On one end is a sterilized needle, which is attached to tubes that contain ink. A foot switch is used to turn on the machine, which moves the needle in and out while driving the ink about 1/8 inch (about 3 millimeters) into your skin.

Does It Hurt to Get a Tattoo?

Getting a tattoo can hurt, but the level of pain can vary. Because getting a tattoo involves being stuck multiple times with a needle, it can feel like getting a bunch of shots or being stung by a hornet multiple times. Some people describe the tattoo sensation as "tingling." It all depends on your pain threshold, how good the person wielding the tattoo machine is, and where exactly on your body you're getting the tattoo. Also, keep in mind that you'll probably bleed a little.