Walnut (Juglans regia) leaves are rich in naphthoquinones (such as juglone), flavonoids, and condensed tannins. Juglone is a highly potent natural antimicrobial, antifungal, and antiparasitic agent that effectively inhibits skin pathogens, fungi, and parasites. The abundant tannins provide a powerful astringent effect that constricts skin tissue, dries up oozing eczema lesions, and controls excessive perspiration.
Educational information only — never stop or change a prescribed medication without talking to your prescriber first.
Generally safe topically. Long-term continuous oral use is not recommended due to high tannin content (interferes with iron absorption) and trace naphthoquinones. Discontinue if skin irritation or rash occurs.
Evidence level: Moderate
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