Light-responsive inks could make tattoos visible on demand, but safety remains unproven

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 This story matters for Science & Discovery readers tracking insect. Reported by phys.org. Read the full original at the source link below.