Ketoconazole shampoo can also treat tinea capitis and tinea versicolor. Tinea capitis is a superficial, ringworm-like fungus infection that can affect your scalp. Tinea versicolor is a skin ...

Antifungal powders include: Scalp ringworm typically requires oral antifungal medication, but shampoos containing ketoconazole or selenium sulfide help reduce fungal spores and prevent spread.