Slicked-back hairstyles are classic and classics for a reason: they give men a polished look that can be worn anywhere. There is a slick-back style for every face shape and hair type, whether you want to look sleek and professional or more casual and wavy. These 29 slicked-back hairstyles for men show off the best in grooming, with classic grace and modern twists. They range from high fades and undercuts to longer lengths with natural flow. Tips for Perfecting the Slick Back Look You should…