Now, blue hair isn't new — Rihanna, Kylie Jenner, Nicole Richie, and many more have rocked a cobalt or navy hue, but this year's version is softer, chalkier, and more like, well, denim. The trend has a drawback, of course. "Although dusty blue is a beautiful color, it's a hard color to maintain," Daniel Moon , the L.A.-based colorist behind Kanye West and Miley Cyrus' rainbow hues, says. "People have a hard time with the fade [because] it usually goes green. The reason why people love peach, sorbet, and ' blorange ' is because the fade is soft and cute." Translation: You gotta really want it, folks.