TLDR Some Korean herb extracts can reduce inflammation and are safe for skin use.
The study investigated the anti-inflammatory activities of 51 Korean herb medicine extracts using RAW264.7 macrophage cells. Ten ethanol extracts, including those from Biotae Orientalis Folium and Dioscoreae Rhizoma, were found to reduce cytotoxicity and inhibit the production of inflammatory cytokines such as Nitric oxide, IL-1β, IL-6, and TNF-α in LPS-induced macrophages. These extracts did not cause skin irritation in human patch tests, suggesting their potential as cosmetic agents for preventing skin irritation.
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January 2004 in “Journal of Physiology & Pathology in Korean Medicine” Thuja orientalis extract significantly promotes hair growth in mice with hair loss.
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August 2017 in “Journal of food and nutrition research” The herbal supplement increased hair thickness and reduced scalp oiliness in women.
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September 2021 in “Journal of Pharmacopuncture” Korean medicine may help with hair growth in alopecia, but more research is needed to confirm this.
January 2007 in “동의생리병리학회지 = Journal of physiology & pathology in Korean Medicine” Biotae Orientalis extracts may help treat hair loss.
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November 2015 in “Journal of Ethnopharmacology” Certain Chinese herbs, especially Cacumen platycladi, can promote hair regrowth and reduce hair loss-related hormone levels in mice.
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August 2018 in “International Journal of Cosmetic Science” Dermal Papilla cells are a promising tool for evaluating hair growth treatments.