124 citations,
April 1992 in “Journal of Endocrinology/Journal of endocrinology” Beard hair follicles have more androgen receptors than non-balding scalp hair follicles.
38 citations,
August 2012 in “Biochemical and biophysical research communications” Human leukocytes and beard hair follicle cells have internal daily clocks, and PER1 and PER3 genes may indicate individual circadian rhythms.
28 citations,
August 2013 in “Facial Plastic Surgery Clinics of North America” Body and beard hair can be used for hair restoration in severely bald patients, but the technique is complex and costly.
26 citations,
January 2016 in “Journal of cutaneous and aesthetic surgery” Hair transplant combining scalp and beard hair with PRP was successful for scarring alopecia.
22 citations,
September 2017 in “Skin appendage disorders” Ruxolitinib helped a man regrow his beard after years of hair loss.