91 citations,
April 2011 in “Journal of Ethnopharmacology” Polygonum multiflorum extract helps grow hair by activating certain hair growth signals in mice.
74 citations,
August 2006 in “Journal of clinical gastroenterology” Shen-Min, a hair growth supplement, likely caused acute hepatitis in a woman, improving after she stopped taking it.
25 citations,
July 2017 in “Archives of Dermatological Research” Herbal products might promote hair growth with fewer side effects, but more research is needed to confirm their safety and effectiveness.
19 citations,
June 2010 in “Journal of acupuncture and meridian studies” A plant extract was found to effectively block an enzyme related to male hormone-related diseases.
15 citations,
May 2020 in “BMC complementary medicine and therapies” Polygonum multiflorum extract helps hair grow longer and fights the effects of hormones that cause hair loss.