Black Hairstyles with hair extensions are hard to come by. To complete this straight hair look, you will first need to visit a professional stylist that will sew in extensions that match your hair color. Once this is complete you will follow the steps listed. You will need a hair cream that will tame the frizz and allow for a straight hairstyle, which can be bought at any store that sells hair products. Next you will need a straightener. Clip the hair in sections and straighten one section at a time.