231 citations
,
October 1999 in “Journal of Clinical Investigation” This study found that administering an adenovirus vector to increase Sonic hedgehog gene expression in mouse skin accelerated the transition of hair follicles into the growth phase, promoting hair growth.
32 citations
,
April 2016 in “Journal of Investigative Dermatology” This study found that STAT5 activation in the dermal papilla acts as a key switch to trigger anagen entry in postdevelopmental hair follicle cycling.
28 citations
,
October 2011 in “International Journal of Molecular Medicine” In this study, adenosine was found to stimulate hair follicle growth in vitro by promoting growth factor expression, β-catenin activation, and downstream signaling pathways.
15 citations
,
May 2020 in “BMC complementary medicine and therapies” This study found that Polygonum multiflorum extract may promote hair growth by increasing anagen duration and activating dermal papilla cells in human hair follicles, as observed in cultured cell models.
11 citations
,
January 2014 in “The Journal of Clinical Endocrinology & Metabolism” This study suggests that estrogen synthesis from estrone sulfate significantly influences hair growth regulation, with variations based on the hair growth phase, gender, and age.