January 2024 in “Biological & pharmaceutical bulletin” Panax ginseng extract helps human hair grow by encouraging growth phase transition and cell proliferation while reducing certain protein expression.
3 citations,
January 2021 in “Journal of dermatology & cosmetology” Current alopecia treatments manage symptoms but don't cure, and better treatments are needed.
7 citations,
December 2020 in “Clinical and Experimental Dermatology” Cepharanthine may help hair growth by boosting cell growth and VEGF expression.
72 citations,
June 2019 in “International Journal of Cosmetic Science” 18β-glycyrrhetinic acid from licorice root is good for skin and hair treatments but has absorption challenges.
19 citations,
January 2016 in “Annals of Dermatology” Dutasteride is safe and effective for treating hair loss, but may decrease libido.
11 citations,
October 2015 in “Clinical and Experimental Dermatology” Sophora flavescens extract helps hair growth and treats hair loss.
115 citations,
September 2012 in “Experimental Dermatology” Androgens have complex effects on hair growth, promoting it in some areas but causing hair loss in others, and our understanding of this is still evolving.
209 citations,
September 2008 in “Dermatologic Therapy” Androgens can both increase and decrease hair growth in different parts of the body.
190 citations,
October 2002 in “The FASEB journal” Androgens may cause hair loss by increasing TGF-beta1 from scalp cells, which inhibits hair cell growth.
231 citations,
December 1999 in “Journal of Investigative Dermatology” Hair follicle size is mainly influenced by the number of cells and extracellular matrix volume, with cell number having a larger impact.
30 citations,
March 1996 in “British Journal of Dermatology” 
521 citations,
January 1954 in “Physiological Reviews” Hair growth is cyclic and influenced mainly by local factors.
