Topical Antifungal - Ketoconazole. indicated for the topical treatment and prophylaxis of conditions in which the yeast Pityrosporum is involved, such as pityriasis capitis (dandruff). NIZORAL shampoo is also indicated for seborrheic dermatitis. Each mL of pink-orange, viscous shampoo with an herbal bouquet contains: ketoconazole 2% (20 mg/g).