Color them surprised. In a new study, German researchers were able to track how the liquid components of tattoo ink behave in the body. Scientists in Germany’s Federal Institute for Risk ...

When you get a tattoo, your body mounts a battle against the ink. So how do ankle flowers and bicep hearts stick around so long? Researchers took a look at specialized cells that gobble up the ink.

Ephemeral tattoos are meant to fade in 15 months, but years later, some customers say they're still stuck with the ink. The tattoo regret is real.

Dear EarthTalk: I’m interested in getting a new tattoo, but recently found out that red tattoo ink contains mercury. Is this true of other tattoo inks as well? Are there any ecofriendly ...

HP printers blocked the use of third-party ink cartridges for years. However, you can upgrade many HP printers to avoid the ban. Here's a list.

Canon's doing it, too HP isn't the only company demanding ink for scans and faxes. It's not even the only one that has faced litigation over it. As noticed by The Verge, Canon back in March ...