In the Disney movie Tangled, Rapunzel’s long hair glows when she sings a specific set of words. It also heals wounds, restores youth, etc. You can’t replicate those powers, but it is possible to achieve the glowing effect. YouTuber and cosplayer Graziella Pozzo created a replica of Rapunzel’s costume for the recent Florida Supercon and made her giant braided wig light up with 120 LEDs programmed to glow and then twinkle at random.
This video has another look at the costume:
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