A tattoo has traditionally been a commitment etched into the skin, with removal often involving multiple laser sessions, ...

A team of engineers has designed a new line of multicolored tattoo inks that switch on and off with different kinds of light.

PhotoTat, a light-activated invisible tattoo ink, changes color and fades on demand. It could replace permanent radiation ...

Black light tattoos were becoming increasingly popular, especially with the younger generation in 2004. Safety concerns over those kinds of tattoos were in the spotlight after the Food and Drug ...