Wash your hair with a shampoo and conditioner designed to combat frizz and tame curls. Use a leave-in hair relaxing spray, and apply a hair mask once a week.
Brush your hair with a large round brush, and blow dry hair until almost dry. Roll sections of your hair around the hot curlers, and leave the curlers in until your hair is completely dry. Remove the curlers, and brush your hair with a wide-toothed comb.
Apply a heat protection spray to the hair. Divide your hair into sections, and carefully use a ceramic flat iron to straighten each section of the hair from root to tip.