Birch is a tree that is native to many parts of the world, and its leaves and bark have been used in traditional medicine for centuries. The active ingredients in birch include flavonoids, tannins, and saponins, which have been shown to have a variety of health benefits.
Topical use of birch may be beneficial in a number of ways. For example, birch leaves and bark have been used to help treat skin conditions such as eczema and dermatitis, due to their anti-inflammatory and astringent properties. Birch leaves and bark may also be used as a natural diuretic and may help to reduce swelling and fluid retention.
Birch leaves and bark may also be used in the treatment of muscle and joint pain, as they contain compounds that may help to reduce inflammation and provide relief. In addition, birch leaves and bark may have antimicrobial properties and may be used to help treat infections of the skin and other tissues.