Physical Review Letters, 2026. DOI: 10.1103/gbkc-6nlj.
Invisible tattoos that show up under light Credit: Matter & Light, Bruns et al./CC BY-SA
Many people sport tattoos, but there are situations where hiding them is desirable. A new line of multicolored tattoo inks could one day make that dilemma moot; they are invisible to the human eye unless one illuminates them with UV light, according to a paper published in the journal Matter & Light. “There’s a stigma, in science and in many cultures, around body art,” said co-author Carson Bruns
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