★★★★★
Borax (dissolved in Apple Cider Vinegar) is good for getting rid of/controlling fungus generally, but I have found that a 1/4 cup of washing soda (Sodium Carbonate) dissolved in a pint of water, and rinsed thoroughly through the hair a couple of times a week, completely cleared up any scalp/hair odor. Basically, the washing soda seemed to work better for eradicating bacteria than fungus. I now routinely put washing soda (and occasionally borax and/or sodium bicarbonate) in the bath. A quick rinse with ACV afterwards will bring back a lustrous shine to the hair. A whole lemon juice rinse also can help the hair/scalp.