Natural and healthy rock salt aerosol therapy
In medieval Europe, salt industry found that salt miners rarely suffered from respiratory diseases such as rhinitis, asthma and pneumonia. In 1843, Polish scholars confirmed that in the special structure of the cave, the unique microcirculatory climate combined with saturated salt dust was the main factor for curing respiratory diseases, and named this treatment "cave salt therapy". In 1858, the first convalescent center with professional breathing conditions was established in Villichka, Poland, which used the abundant ultra-fine dispersed dry salt aerosol in the cave microenvironment for rehabilitation treatment. After that, Poland, Germany, Austria, Switzerland, Hungary, Romania