15 Rainbow Hair Trends That Dominated Salons in 2015

Look closely — at quick glance, this image may just appear to be of a blond bob. But further examination reveals tones of pink, blue, peach, and yellow. This mesmerizing style is courtesy of the opal hair color technique, which layers a variety of iridescent pastel dyes on a pearl-white mane. When done correctly, every move will reflect a different color — just like when you look at the gemstone.