The first time I had a skin fungal infection I used a doctor prescribed ointment, in a week it was gone. Twenty years later I had another ringworm, this time I used an over the counter antifungal cream and my skin cleared in about a week. Just recently, I discovered another ringworm after almost ten years with no problems. I used some tea tree oil I had on hand and it was gone in four days. If your husband won't use iodine try the tea tree oil.