TLDR Russelia equisetiformis may help promote hair growth.
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75 citations,
October 2002 in “Journal of Dermatological Science” Sophora flavescens extract may help hair grow by affecting growth factors and blocking a hair-related enzyme.
37 citations,
January 1993 in “Yakugaku zasshi” Ginkgo biloba leaf extract may help hair regrowth and improve heart health.