Coarse damaged hair will provide the most dramatic results, the treatment will smooth and improve the quality of your hair, eliminating frizz and dramatically reducing curl. You will have healthy, easy to manage hair. For very curly hair you will retain the integrity of your curl though it will be more relaxed. After washing at home you will get a perfectly straight finish again after only a few minutes drying it off with a hair dryer. Though there may be some hair resistance during your first treatment, each subsequent treatment will provide an even straighter finish.