95 citations
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June 2002 in “The Journal of Dermatology” In this study, using topical crude onion juice significantly improved hair regrowth in patients with patchy alopecia areata compared to tap water.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This review assesses the potential of ginger, garlic, onion, and clove as complementary herbal treatments for hair and scalp health, reporting that onion juice shows the strongest clinical evidence for hair regrowth, particularly in alopecia areata, while garlic exhibits promising preclinical regenerative effects.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This review evaluates herbal botanicals like onion, garlic, ginger, and clove for hair and scalp health, noting that onion juice shows the strongest clinical evidence for hair regrowth particularly in alopecia areata, although these cannot replace traditional medical treatments.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This review reports that onion-derived products, like juice and oil, show potential benefits for hair regrowth in alopecia areata and scalp health due to their rich phytochemical content, but notes that further standardized formulations and rigorous clinical trials are needed to substantiate these effects.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This review synthesizes current research on onion-derived preparations for scalp and hair health, highlighting their potential benefits in hair regrowth, microbial reduction, and follicular support, while noting gaps in standardized formulations and controlled clinical trials.