Scientists develop tattoos that can be switched on and off with a chemical trick

Researchers have developed a chemistry-based method that lets tattoo ink switch between visible and invisible on demand, using a reversible reaction triggered by a change in conditions. The technique, reported by a team studying molecular switches, could one day allow tattoos to be hidden for job interviews or reappear for weekends. No human trials or commercial product timeline were announced.

Source: Scientists develop tattoos that can be switched on and off with a chemical trick — Live Science

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