Selsun Blue with Aloe is great to wash a pig with. They get really soft and smell great. It's a Peter Gurney recommendation.
If the fungus continues - before you do skin scrapings - try doing LymDyp. 1 tsp per 2 cups of warm water, and sponge on from the head back. Just wear a nose plug cause it STINKS!!!!!!! Do it once a week for 4 weeks.
Dallas, Houston & Peanut the Prairie Dogs
Gypsy & Amber the Satos
Apache, Amigo, Max, and Morgan the Kitties
Scooter, Annie, Buttercup & Squeaky the Guinea Pigs
Mocha & Latte the Rat A Tats