Selecting Hairstyles Straight Hair, Those with straight hair may find it difficult to find the right hairstyle. Selecting the right one will depend on the length of the hair each man has and the look he is trying to achieve. There are actually many hairstyles to choose from. It just takes selecting the right hairstyles for straight hair that work for you. Slicked BackYou can easily slick back your hair when itâs straight, no matter what length it is. The longer though, the better, as it will allow the hair to remain back easier. A bit of styling and mousse or gel is necessary for this hairstyle to ensure it stays slicked back all day long. Otherwise some of the hair may fall forward, creating a completely different look.