Sulfur8 Scalp Therapy Medicated Scalp Spray is used to control scalp itching and flaking due to dandruff. This spray also neutralizes odor with Deoboost technology, detangles, and controls frizz. Spray the affected area of your scalp 1-4 times daily or as directed by a doctor. This medicated scalp spray has the active ingredient of Salicylic Acid, which helps in eliminating and controlling dandruff.