Colorist Aura Friedman invented opal hair color, and it's sure to be on every single one of your fave celebs in the next few months. The magic happens when you lighten hair - right before hitting that "grey" stage, you get a very iridescent, super-shiny look that resembles the sheen on a pearl. If you want to play around with the trend even more, you can throw fun colors like your fave pinks and blues into the mix. And there you have it: hair color perfect for a My Little Pony!
Interested in opal hair? Just remember that this isn't a look you want to try at home. Since you're going to need to go super light to achieve the desired color, it's best to head to a salon so they can bleach you to pearly perfection. Your colorist will tell you if your hair can handle going that light: if not, you may have to settle for some cute opal clip-in extensions!