Personally I don't like roller sets with long hair, because its a hassle and not worth the bargain. However buying a blow dryer with a comb attachment only adds to the damage due to the direct force of heat applied to the strands of hair. But there are plenty of other methods you can try for drying your hair before flat ironing. And YouTube would be a good place to check out some ways. Personally I prefer the tension method and leaving my hair fairly dry with a small amount of moisture left, that way when I straighten it my hair would be dry and crusty. And also don't forget your heat protectant!!(: