Dandruff and seborrhoeic dermatitis are often linked to an overgrowth of the yeast P. ovale, which normally lives on our bodies. Ketoconazole, an effective anti-fungal, helps control these conditions by targeting the yeast. SEBIZOLE SHAMPOO, with ketoconazole, aids in managing dandruff and seborrhoeic dermatitis by providing lasting anti-fungal action through accumulation in the hair.