Tattoos are usually considered a form of personal expression, but a team of researchers in Europe have created what they’re calling the world’s first light-emitting tattoo based on OLED screen ...

Scientists in Germany have developed three different tattoo dyes that change color based on the levels of certain health markers in the blood. Scientists are developing color-changing inks that may ...

Researchers working together at Harvard and MIT have developed a new ink for tattoos that is able to monitor health and change color to warn of certain medical issues. The ink could change colors if ...

Tattoos are forever, right? Well, maybe not like we once thought. You can get them removed (though laser tattoo removal is nothing to scoff at), get an ephemeral tattoo that fades in a few years, or ...

Scientists at the University College of London (UCL) and the Italian Institute of Technology (IIT) have created temporary tattoos embedded with OLED lights like the ones used to illuminate TVs and ...

UV tattoos use a fluorescent dye, which means the tattoo only appears under UV light. There is little evidence on whether UV tattoo ink is safe for human skin. UV tattoos, also known as black light ...