108 citations
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November 2006 in “Phytomedicine” This study found that EGCG from green tea may stimulate human hair growth by promoting the proliferation and anti-apoptotic activity in dermal papilla cells.
3 citations
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January 2014 This study concluded that a green tea extract hair tonic was stable, promoted more hair growth than 2.5% minoxidil, and did not cause skin irritation.
July 2019 in “Majalah Obat Tradisional” This study reported that a 4% water fraction of green tea leaf extract showed the most effective hair growth promotion in rabbits.
April 2019 in “Agriculture and natural resources” December 2021 in “Ad-Dawaa' Journal of Pharmaceutical Sciences” This study concluded that hair tonic formulations using extracts of green tea leaves, celery leaves, or their combination can effectively promote hair growth in guinea pigs, with the fastest growth seen using a 2.5% green tea to 7.5% celery leaf extract ratio.