Bai Shi Zhi
Kaolinite (Al₂Si₂O₅(OH)₄)
☯ TCM Properties
Astringes the Intestines and Stops Diarrhea; Astringes and Stops Bleeding; Absorbs Dampness and Heals Sores; Tonifies Lung Qi; Dries Dampness in the Intestines
Botanical Description
Bai Shi Zhi is kaolinite, a hydrated aluminium silicate clay mineral of idealised composition Al2Si2O5(OH)4, occurring as fine-grained, soft, earthy white to greyish-white masses formed by the weathering of feldspar-rich rocks such as granite. The medicinal grade is collected from kaolin clay deposits in southern and eastern China, then washed, levigated to remove sand and iron impurities, dried and reduced to a uniform powder. The finished mineral is dull white, sometimes faintly pink or yellow, very soft (Mohs about 2), opaque, with an earthy fracture and a smooth, slightly greasy feel; it adheres lightly to the tongue, has no odour and a mild, faintly clay-like taste. It is insoluble in water but disperses to form a smooth suspension, and is chemically inert to dilute acids and alkalis at room temperature.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 6-15g | Daily | — | — | — |
Cultural & Historical Context
Traditional Chinese Uses
Bai Shi Zhi (kaolin or white halloysite clay) is a warm, astringent mineral substance used to stop chronic diarrhea, restrain excessive vaginal discharge, and stop bleeding from the lower body. Similar to Chi Shi Zhi (red halloysite), it works by consolidating and astringent the lower burner for deficiency-type leakage patterns. Its warm nature makes it especially appropriate when the underlying condition involves cold deficiency of the Spleen and Kidney.
Traditional American Uses
None Documented
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.