Dermazole shampoo is used for the treatment and prevention of hair lesions caused by the yeast microorganisms Malassezia (Pityrosporum) such as dandruff, Seborrheic dermatitis and tinea versicolor. Apply shampoo to the affected areas for 3-5 minutes, then rinse with water. Treatment: Dandruff & Seborrheic dermatitis - 2 times a week for 2-4 weeks Tinea versicolor: Once daily for a maximum of 5 days Prevention: Dandruff & Seborrheic dermatitis - Every week or once every two weeks