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February 2016 in “Experimental Dermatology” SFRP2 boosts Wnt3a/β-catenin signals in hair growth cells, with stronger effects in beard cells than scalp cells.
51 citations,
November 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Beard cells, unlike scalp cells, produce growth factors in response to testosterone, which may explain differences in hair growth.
77 citations,
March 2001 in “Clinics in Dermatology” Androgenetic alopecia involves genetics, hormones, and can be treated with medications or surgery.
41 citations,
June 2006 in “Journal of Investigative Dermatology” Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.
48 citations,
April 1995 in “PubMed” Testosterone helps beard and axillary hair cells grow by releasing growth factors from dermal papilla cells.