We love Diesel’s edgy style, and the hair trends at his show did not disappoint. The key to achieving this style is to let loose. It doesn’t have to be perfect. Don’t bother with endlessly straightening your hair. Just let it air dry and put it in a low ponytail with a very thin, almost invisible rubber band. After that, grab just above the rubber band a tug a little bit to get a “messy bump.” Secure with hairspray.