Summer means change: new shoes, new clothes, and a new grooming routine. But don't forget your hair — it also deserves a fresh look. Sure, we've said that longer hair is coming back into style lately — a correction in response to those overly trendy razor-fade styles reminiscent of the early part of the 20th century. The problem with that in warmer climates is that all that extra bulk on top of your head can actually make you feel hotter.