* Vigorously rub the sore spot with the rye flour, well-sieved through a nylon fabric.

* Rub the affected area with garlic, and then rub birch charcoal mixed with the juice of fresh burdock root. Rub for 20-30 minutes, two or three treatments usually are enough to cure.

* Take a piece of paper, fold it the funnel, put on a plate with a sharp end up and burn. When the paper turns to ashes, and the plate will have yellow oily liquid, remove it with a knife until it has cooled down, and apply to affected skin. Repeat the treatment several times until no denying.