Peanut Coat Classic Formulas … Natural Herb Library

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Stops bleeding with relatively gentle astringency ... Hua Sheng Yi is used for hemoptysis, epistaxis, blood in the urine, and uterine bleeding when the pattern does not require harsh cooling or drastic movement.
Dispels stasis and resolves swelling ... traditional use also extends to traumatic bleeding and bruising where bleeding and stasis coexist.
Uses the red seed coat rather than the nutritive peanut kernel ... the medicinal lane depends on the skin's hemostatic and polyphenol-rich identity, not on the food value of the nut itself.

Hua Sheng Yi with Bai Ji or Ce Bai Ye ... traditional Lung-bleeding logic for cough with blood or blood-streaked sputum.
Uterine-bleeding combinations with Ai Ye and Pao Jiang ... used when bleeding needs gentle restraint without abandoning warming support.
Traumatic-bleeding pairings with San Qi or Ru Xiang and Mo Yao ... used when swelling, bruising, and bleeding occur together.

TCM Wiki describes Hua Sheng Yi as sweet, astringent, and neutral, entering the Spleen and Lung to stop bleeding, dissipate stasis, and reduce swelling.
The medicinal emphasis is on the seed coat, so removing the skin from the peanut changes the herb identity substantially.