The most common haircut for men with medium-length is the classic side part with short sides and back. This look is timeless but still very much in style, so try to make the part a little more subtle. For the front, keep the hair long and smooth, and use a side parting comb to sweep the sides up. If you are trying to make the parting more prominent, you can use hair gel to secure it. You can also try to dye that if you’re feeling adventurous and bold. For the office, add a bold part with a straight or angled style.