I cut Constantinos’s hair using my clippers at the back and the sides and left the top gradually longer as I worked towards the front. I then parted it on the side using gel and gave it a tiny bit of volume. The slick side-parted hairstyle on boys is still going strong, whether associated with hipsters or considered a classic. This extra five-minute-effort is definitely worth it. Important tip: make sure your hair is dry before you put gel.