Tattoo inks switch color with light exposure
Researchers developed multicolored tattoo inks that change visibility when exposed to specific light wavelengths. The inks are activated by different light types, but safety and long-term effects remain untested.
The method offers potential for on-demand visibility, though it is early-stage and unproven in humans.
- study
- multicolored tattoo inks that are activated by different wavelengths of light
- journal
- Matter & Light
Taken from the source as published — check the details before acting on them.
Light activation method
The inks respond to different wavelengths of light, allowing them to be seen or hidden depending on the light used.
Study limitations
The research is described in a study, but the technology has not been tested for safety or long-term effects in humans.
Common questions
How do the inks change color?
The inks are activated by specific wavelengths of light, which can make them visible or invisible depending on the light used.
Has the technology been tested on humans?
The study does not mention human testing; safety and long-term effects are unproven.
Sources
- Cool chemistry trick allows new tattoos to 'turn on and off' By Kenna Hughes-Castleberry, Live Science · livescience.com
- Light-responsive inks could make tattoos visible on demand, but safety remains unproven Phys.org · phys.org
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