Sansevieria trifasciata Prain shows promise for treating hair loss by inhibiting androgen receptors.
January 2022 in “Springer eBooks” January 2016 in “Medicinski Podmladak” 
January 2016 in “Hair transplant forum international” Finasteride's link to health issues like male breast cancer, infertility, and prostate cancer needs more research through placebo-controlled trials to confirm.
83 citations,
May 2013 in “International Journal of Molecular Sciences” Skin development in mammals is controlled by key proteins and signals from underlying cells, involving stem cells for maintenance and repair.
24 citations,
April 2020 in “Cells” DNA methylation and long non-coding RNAs are key in controlling hair growth in Cashmere goats.
19 citations,
April 2015 in “International Journal of Molecular Sciences” The research identified genes and pathways important for sheep wool growth and shedding.
10 citations,
November 2022 in “Protein & Cell” Quercetin significantly helps hair growth by activating hair follicles and improving blood vessel formation around them.
3 citations,
July 2020 in “Synthetic and Systems Biotechnology” Scientists improved an enzyme to better produce a hair growth-promoting chemical from an immunosuppressant.
2 citations,
April 2021 in “International Journal of Molecular Sciences” The study concluded that changing the culture conditions can cause sika deer skin cells to switch from a flat to a 3D pattern, which is important for creating hair follicles.