Char
1. Sunlight kills fungus. Notice how mushrooms and other fungi only grow in wet, shady areas. It is the same with ringworm. Spend at least an hour in the sun each day. Keep the affected skin dry and exposed to as much sun as possible without burning your skin. No sunscreen.
2. 100% tea tree oil 3-4 times a day and overnight.
I tried ACV, honey and cinnamon, rose oil, and a few other things, but it was the sunshine that started to make a huge difference. Tea tree oil dries up the skin eruptions quickly as well.
Tea Tree oil is a strong anti-fungal and I do recommend it but ringworm actually thrives in the warmth which is why it likes to grow inbetween toes and on the womans inner thigh in the above comment so I don't think sun will help.