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 vaginal lesions as can be seen on Borax's page.
Borax is a Cool herb that tastes Salty and Sweet. It targets the Stomach and the Lung.
Its main actions are: Applied topically for Toxic-Heat. Clears Phlegm-Heat in the Lungs.
Sore throat Throat pain Open sores in mouth Red eyes Swollen eyes Painful eyes Blurred vision Toe blisters