Control and Helps Prevent the Recurrence of Scalp Itching, Irritation, dandruff and Flaking. This potent anti-dandruff formula with chemically tested active Pyrithione Zinc deeply cleanse hair and scalp, and helps prevent the recurrence of symptoms associated with dandruff. Fortified with a natural-derived bland of Essential Oils, Rosemary Leaf and Marjoram Oil. Our non-stripping shampoo leaves hair and scalp refreshed, invigorated and healthy looking.