Frizzy hair is fragile and can lead to hair loss and damage if not properly cared for.
5 citations
,
December 2011 in “Canadian Journal of Plastic Surgery” Hair grafts can successfully reconstruct a beard on reconstructed jaw skin, improving appearance and patient satisfaction.
1 citations
,
January 2018 in “International Journal of Trichology” Circle hairs are harmless, spiral-shaped body hairs that don't need medical treatment.
March 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Beard hair medulla cells have a unique and varied keratin pattern.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
62 citations
,
December 2008 in “Journal of structural biology” Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.
33 citations
,
September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
67 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Androgens promote beard growth but cause hair loss in androgenetic alopecia, with TGF-β1 as a potential treatment target.
4 citations
,
January 2014 in “Bone marrow transplantation” Alopecia areata can be transferred through stem cell transplants from affected siblings.
3 citations
,
October 2024 in “The Journal of Clinical Endocrinology & Metabolism” Potential androgen excess signs vary by demographics and health, needing inclusive evaluation.
48 citations
,
July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
November 2025 in “SKIN The Journal of Cutaneous Medicine” Baricitinib significantly regrows hair in nasal, genital, and beard areas for severe alopecia areata.
November 2023 in “Facial Plastic Surgery” Beard hair is the best for body hair transplants, but the procedure is hard and should be done by experts.
4 citations
,
July 2006 in “British journal of dermatology/British journal of dermatology, Supplement” Testosterone increases hair follicle cell growth when beard or axillary skin cells are present together.
12 citations
,
March 2004 in “Journal of Investigative Dermatology”
16 citations
,
April 2017 in “ACM Transactions on Graphics” Light scatters differently from elliptical hair fibers than from circular ones, and a new model better predicts this behavior, especially for shiny highlights.
1 citations
,
June 2022 in “Tidsskrift for Den norske legeforening” A young boy's uncombable hair is due to a rare genetic condition that usually improves over time.
January 2020 in “Nasza Dermatologia Online” A mixture of Dijon mustard, turmeric powder, and linseed oil can effectively treat alopecia barbae.
173 citations
,
July 1995 in “Biochemical and biophysical research communications” Male hormones promote hair cell growth by using a growth factor from nearby skin cells.
25 citations
,
July 1994 in “Journal of dermatological science” Testosterone affects hair follicles differently across body sites, with beard hair follicles showing more activity of a specific enzyme and presence of androgen receptors compared to scalp hair.
Baricitinib helps keep hair, eyebrows, and eyelashes regrown for 3 years in most people with severe hair loss.
21 citations
,
January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
1 citations
,
July 2023 in “Cureus” A rare hair disorder with multiple hairs from one follicle was found on a patient's abdomen.
48 citations
,
April 1995 in “PubMed” Testosterone helps beard and axillary hair cells grow by releasing growth factors from dermal papilla cells.
1 citations
,
March 2024 in “Genes & Diseases” EBF1 controls hair type and length.
37 citations
,
June 2000 in “Experimental dermatology” The Lanceolate hair-J mutation in mice mimics human hair disorders like Netherton's syndrome.
33 citations
,
January 2017 in “Conservation physiology” Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.
14 citations
,
January 2014 in “Indian Journal of Dermatology Venereology and Leprology” Frontal fibrosing alopecia can affect men's beards and leads to permanent hair loss.
A six-year-old girl with extra hair on her elbows was treated with hair removal methods.
January 2018 in “Figshare” Curcuma aeruginosa extract lotion effectively reduces underarm hair growth.