My son has both the cowlick at the back and the cowlick at the forehead. In summer I have the hairdresser cut it very short. For a longer cut, they do a "scissor" cut. When I cut it myself, I do use clippers, but I still leave the hair long enough at the back to weigh down the cowlick. Also, at the back, I go with the natural flow, and I comb the hair kind of in a circle to the left, the way the hair naturally wants to lay. If the front looks nice, and the back looks combed (it doesn't have to be combed straight down like you would a girl's hair), he looks cute and combed.