Ever wondered if you could permanently change your hair colour with just the sweep of a flat iron? Well, probably not, but new researched published this week by Prof. Zeyd Leseman et al. at the University of New Mexico suggests that one day you may be able to do just that.

The paper, entitled 'Nano-Patterning of Diffraction Gratings on Human Hair for Cosmetic Purposes', is the result of experimentation with Focused-Ion Beam (FIB) technology to etch the hair surface into a diffraction grating, ...
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