At last, Jake Gyllenhaal’s hair has grown out of that awkward stage when it’s always in your eyes but too short to form a ponytail. He joins Harry Styles and Bradley Cooper on the other side of the man-bun Rubicon — where the men trade YouTube hair tutorials like teenage girls, where every man looks like the sexy cross between a samurai and a European soccer star, where you can always just borrow a hair band from your boyfriend.