My hair is straight, straight, straight. But, I also use a flat iron because it makes it look shiny and sleek. I know it's not good for my hair, but, I don't know a single person that can say they don't do something that isn't good for them. Hey, I don't smoke or drink or eat junk food, I can use a flat iron! I've heard that an iron works faster, but, I've never tried it.