January 2012 in “International Journal of Trichology” Two siblings have a rare genetic condition causing curly, coarse hair.
191 citations
,
November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.
4 citations
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December 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Human scalp hair follicles can produce hormones and have a system similar to a brain-body communication network.
October 2025 in “Frontiers in Veterinary Science” Quercetin boosts hair follicle stem cell growth and survival in cashmere goats.
1 citations
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September 2024 in “Frontiers in Cell and Developmental Biology” Pigs are a good model for studying human hair growth and disorders.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
2 citations
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January 2022 in “Skin research and technology” OCT can detect hidden hair follicles in alopecia areata, indicating potential hair regrowth.
July 2009 in “International Journal of Cosmetic Science” Japanese women's curved hair has an uneven internal structure and varied amino acid composition.
40 citations
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February 1990 in “Journal of The American Academy of Dermatology” A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.
33 citations
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August 2013 in “British Journal of Dermatology” Lack of small, fine hair on the front hairline is a key sign of frontal fibrosing alopecia.
9 citations
,
January 2003 The evolution of mammal body hair remains a mystery.
January 1999 in “대한피부과학회지” Trichotillomania is more common in young females and often linked to stress and psychiatric conditions, with hair loss and increased catagen hair observed.
2 citations
,
August 2020 in “Natural Product Communications” A mix of Platycladus orientalis leaf extract and alpha-terpineol helps mice grow hair by increasing growth factors and cell growth.
26 citations
,
January 2019 in “Experimental Dermatology” Researchers created early-stage hair-like structures from skin cells, showing how these cells can self-organize, but more is needed for complete hair growth.
15 citations
,
July 1999 in “Dermatologic Clinics” The document concludes that immune system abnormalities cause alopecia areata, but the exact process is still not completely understood.
90 citations
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December 2008 in “Journal of Investigative Dermatology” Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.
46 citations
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April 2009 in “Journal of Dermatological Case Reports” Researchers established normal hair and scalp characteristics for healthy women using trichoscopy.
March 2012 in “Journal of The American Academy of Dermatology” Dermoscopy helps diagnose different hair loss conditions, and characteristics vary among ethnicities and individual cases.
5 citations
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September 2015 in “PLoS ONE” Gelfoam® histoculture supports long-term hair and nerve growth in mouse whisker follicles.
November 2021 in “International journal of research - granthaalayah” The document suggests that human hair has electrical charges because of a gap in nerve cell coverage that affects electromagnetic radiation.
January 2026 in “Indian Journal of Paediatric Dermatology” Trichoscopy effectively diagnoses and monitors treatment in children with tinea capitis.
December 2025 in “International Journal For Multidisciplinary Research” Muridae species have unique hair patterns specific to each genus and species.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers made a detailed map of gene activity for different parts of human hair follicles to help create targeted hair disorder treatments.
9 citations
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February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.
November 2025 in “Bioactive Materials” TQC shows promise for better hair regrowth in treating hair loss.
25 citations
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October 2018 in “PloS one” Key genes regulate hair follicle phase changes in Inner Mongolia cashmere goats.
352 citations
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August 2003 in “Proceedings of the National Academy of Sciences” Nestin is found in hair follicle progenitor cells, linking them to neural stem cells.
April 2017 in “Journal of Investigative Dermatology” Blocking JAK-STAT5 signaling in mice leads to hair growth.
2 citations
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December 2024 in “BMC Genomics” Key genes and pathways control sheep hair growth phases.