Yes, passengers are allowed to bring tattoo ink in carry-on and checked baggage on planes in the United States. However, when traveling in a carry-on, tattoo ink counts as a liquid and must follow ...

The tattoo needle is actually one piece of metal that has several ends to it. ... According to a TED video, modern tattoo machines pierce the skin at a "frequency of 50 to 3,000 times per minute." ...

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 ...

This is what happens when a tattoo needle pierces your skin. by Joseph Stromberg. Sep 25, 2014, 12:20 PM UTC ... Below is a coil tattoo machine. The way it works is surprisingly simple: ...

Machine tattoos: Stick and poke tattoos: How long the tattoo lasts : It is permanent. It is permanent, but there's a higher risk of fading if not done correctly.