Engineers have created tattoo inks that glow under UV light and fade in normal indoor lighting, offering a reversible and customizable body art option. The inventor, who has worn the color‑changing tattoo for two years, demonstrates the technology’s practicality and longevity. This innovation could appeal to those seeking temporary, light‑responsive designs without permanent commitment.
Engineers built tattoo inks that switch on under UV light and fade indoors, and the inventor has worn the color-changing tattoo for two years.
