Long Hairstyles Man, If you like the look of long hair but hate how hot it can seem when working or in the summer, then the undercut offers you an option. There are a lot of ways to accomplish this. Hair can be trimmed on the bottom to any length you desire.Part of the beauty of long hair is that you can get creative with it. A lot of guys with long hair are wearing it in messy buns reminiscent of the bed head look. Tying the hair back at the nape of the neck is another popular look that keeps hair out of the way.