50 citations,
May 2004 in “Journal der Deutschen Dermatologischen Gesellschaft” Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.
44 citations,
March 2004 in “Journal of Investigative Dermatology” The effects of estrogen on human hair growth are unclear and need more research.
81 citations,
January 2003 in “The FASEB Journal” Follistatin helps hair growth and cycling, while activin prevents it.
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.
114 citations,
October 1996 in “Dermatologic clinics” Hair loss is mainly caused by hormones, autoimmune issues, and chemotherapy, and needs more research for treatments.
48 citations,
April 1995 in “PubMed” Testosterone helps beard and axillary hair cells grow by releasing growth factors from dermal papilla cells.
