AI Insight
Engineers have developed multicolored tattoo inks that can be turned on and off using different wavelengths of light. The light-responsive technology allows tattoos to become visible or invisible on demand and could potentially enable users to draw temporary designs on their skin using laser pointers. The research was published in Matter & Light, though safety testing has not yet been completed.
Why it matters
This technology could provide people with greater control over the visibility of their tattoos in professional or social settings where they may prefer them hidden. It also opens possibilities for dynamic, changeable body art and temporary skin decoration without traditional tattoo removal methods.
Understand the Science
A team of engineers has designed a new line of multicolored tattoo inks that switch on and off with different kinds of light. Described in a study published in Matter & Light, the technology could one day help people hide their tattoos when they have an important business meeting. They could even doodle on their own skin using a simple laser pointer.
Source: Light-responsive inks could make tattoos visible on demand, but safety remains unproven