The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
Because it is a herb specifically indicated to treat weeping sores as can be seen on Red Halloysite's page.
Red Halloysite is a Warm herb that tastes Pungent, Sour and Sweet. It targets the Stomach and the Large intestine.
Its main actions are: Astringe the Large Intestine. Stop bleeding. Promote tissue regeneration and wound healing.
Chronic dysentery Abnormal uterine bleeding Excessive menstrual discharge Trauma bleeding Prolapsed rectum