Clarazole 2% Anti-Fungal Anti-Dandruff Shampoo contains a medicinal ingredient called ketoconazole. This belongs to a group of medicines called 'antifungals'. Like other shampoos, it also contains ingredients to clean your hair. It works effectively against fungal infections on the scalp and body such as: dandruff, dry or greasy scaling of the scalp and other parts of the body called 'seborrheic dermatitis', white to brown patches on the body that sometimes appear after being in the sun called 'tinea versicolor' or 'pityriasis versicolor'.