We've geeked out over rainbow highlighter, and gone mad for rainbow eyebrows. But the latest Instagram craze--known as "Hidden Rainbow Hair"-- may be the most exiting ROYGBIV trend yet. Photos of the intriguin style show beauty-lovers lifting their hair, which is normally a single hue, to expose a whimsical wonderland of "underlights." Take a look:
This is kind of the hairstyle equivalent of wearing a really racy bra under a business suit, right? If nothing else, think of it as a seasonal upgrade on watermelon hair.
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