Treats the cause of dandruff. Suitable for adults and children aged 12 years and over. Contains Ketoconazole. Treats the 3 main scalp symptoms by relieving itching, removing flakes, and soothing inflammation. Starts working from the first wash. To wet hair, apply a small amount of shampoo; Work into a lather and leave on for 3-5 minutes; Rinse thoroughly; Use twice a week for 2-4 weeks.