I need to know what's an effective treatment for seborrheic dermatitis?

Dandruff: Dandruff, or seborrheic dermatitis, is a common disorder that is believed to be caused by a yeast. Most treatments are geared at reducing the yeast. Such treatments include nizoral, (ketoconazole) head and shoulders, and selsun blue. Tar shampoos and corticosteroids can be used as well. This condition rarely results in hair loss. Treating the dandruff, usually clears the dry scalp. One can use scalp oils.