2016 Already Has a Signature Weird Hair Trend: Glow-in-the-Dark Rainbow LocksIt’s been around, but this is the first time we’re seeing it mashed up with the can’t-stop-won’t-stop rainbow hair trend, which has hit the full spectrum of colors from pastel streaks to dreamy “betta fish hair” to ultra-dramatic “sand art hair.”  Now, if you want to make your Lisa Frank-esque rainbow mane glow (or just enjoy the shock factor of those who do!), you most definitely can. The poster children for this trend are longtime rainbow-haired Megan McCay, who Instagrams at RainbowMegz and pro makeup artist Mishele DiMaria, who Instagrams at MicheleDiMariaDesigns.