It's essential to know your face shape to find out which haircut looks best on you. Face shape determines which haircuts are a good fit for you and which you should avoid. Round faces can lengthen their appearance by going for haircuts below the chin, while square faces can benefit from curls or waves to add texture. Heart-shaped faces can easily be framed with bangs, and those with oval faces are the luckiest since they can rock nearly any hairstyle.