Alum Decoction，From *Songya Zunsheng*, Volume 7.，Purple spots and white patches appear on the hands and feet, with the skin becoming dry, thick, and cracked.
Alum Decoction
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Formulas Name : Alum Decoction
Chinese Name : 矾汤
Drug Formulation
White Alum 4 liang, Soapstone Alum 4 liang, Catechu 5 qian, Cypress Leaves half jin.
Source
From *Songya Zunsheng*, Volume 7.
Benefits
Purple spots and white patches appear on the hands and feet, with the skin becoming dry, thick, and cracked.
Instructions for Use
Decoct in water. First, apply tung oil to the affected areas; then, dip a piece of paper in tung oil, set it alight, and use the smoke to fumigate the affected areas. Next, pour the boiling decoction into a basin, cover it with a cloth, place your hands inside the basin, and fumigate them with the steam—ensuring no steam escapes—until the water cools to a warm temperature, then wash the affected areas thoroughly for a long time. Cured after one treatment. Not suitable for mild cases; effective for severe cases.
Note
Avoid consuming soups and broths for 7 days.
Copyright: Excerpt from From *Songya Zunsheng*, Volume 7., Copyright belongs to the Original Author and all original sources, This article was shared by DeDe on August 24, 2026, Please credit the source and include a link to the original article when reposting.
Terminology Proofreading: [Cheng Bo] | August 24, 2026 Reviewed by: [Wang Zhongxiang, Associate Chief TCM Physician (China)] | August 24, 2026
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Alum Decoction,Purple spots and white patches appear on the hands and feet, with the skin becoming dry, thick, and cracked.