One of the best home remedies I have found for a scalp fungal infection is an Apple Cider Vinegar Rinse. Just mix 1/2 cup of warm water with 1/2 cup of apple cider vinegar and rinse over your scalp after every shampoo. You'll need to do this every other day for awhile. The vinegar will not only relieve the fungal infection it will also make your hair shiny and manageable.