I don't know if this will help, but one of my office mates mother just got rid of two huge recurring boils by applying Iodine, Castor Oil and heat. Iodine applied externally is supposed to revitalize skin cells. There is colorless Iodine (I think at Walmart), but it contains an alcohol base, so I don't know if this would be harmful or not.
I know you are still searching for answers. I know it much be frustrating, but I admire your perserverence and willingness to keep asking questions.