It is a key herb for treating severe sores, tinea (fungal skin infections), and leprosy (li feng). In the past, there was a patient suffering from blurred vision, loss of eyebrows, and collapse of the nasal bridge. After taking ci hui (ash from thorns) administered with a strong decoction of Dahuang (Rhei Radix et Rhizoma), he recovered after seventy days. Furthermore, when boiled into a paste with rice vinegar and applied topically to sores and tinea, it yields miraculous effects.
Jiangcan (Bombyx Batryticatus)