About 20 g (3 tablespoons) oak bark is placed in enameled dishes, pour 200 ml (1 glass) of hot boiled water, cover with a lid and heat in a boiling water bath for 30 minutes, filter without cooling, the remaining raw material is squeezed. The volume of the resulting broth is brought to 200 ml with boiled water.
The broth is used topically for rinses in a warm 1/2-1 glass 6-8 times a day. The course of treatment 2-4 weeks.
It is recommended to stir the broth before use.