In this project, the researchers developed a tattoo ink made of photochromic microcapsules; a few seconds of tattooing this ink into skin leaves a color-changing mark that is activated by UV light.

Humans have been tattooing their bodies for thousands of years, from Ötzi the iceman’s ancient ink to ... into their skin? To find out, Mike Rogers visited with Dillon Forte, a tattoo artist ...

RockRollG, a tattoo artist from California, went viral on social media after sharing a video on his TikTok showing how deep the ink used in his tattoos goes into human skin. He used a sausage to ...

But for people with black and brown skin tones, getting that perfect ink can be stressful ... you have to adjust your design to the color of the skin. Alana Yzola: Tattoo flashes are some of ...