It is refined from sulfate mineral alunite.

It mainly contains potassium aluminum sulfate containing water, and the content shall not be less than 99.0%.

Location: Zhejiang, Anhui, Fujian, Shanxi and other places.

Cold, sour and astringent; Enter lung, spleen, liver and large intestine meridian. Externally detoxifying and killing insects, eliminating dampness and relieving itching; Take orally to stop bleeding and diarrhea, dispel wind and resolve phlegm. External treatment is used for eczema, scabies, proctoptosis, hemorrhoids and ear pus; Oral administration is used for chronic diarrhea, hematochezia, metrorrhagia, epilepsy and madness. Dry alum (clean alum, which becomes brittle by burning) can moisten and cure sores, stop bleeding and eliminate rot. Used for eczema, wet sore, proctoptosis, hemorrhoid, pus ear, vaginal itching and nasal polyps. The dosage is 0.6 ~1.5g; Appropriate amount for external use.