On top the ACV and other natural topical treatments, try swallowing 1 tsp. of liquid silver 7 times a day for two days, and ringworm should never come back. It worked for a foot fungus that nothing else would cure. Liquid silver can be bought at health food and vitamin shops. It was the antibody used in the old days. It works for fungal, bacteria and virual infections. I will never be without the silver, because I use it for all kinds of infections, and it works.