February 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Cashmere goat hair growth follows a cycle with distinct growth, regression, and resting periods, influenced by specific genes.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Aging causes changes in scalp cells that can negatively affect hair health.
Older women's scalp cells show changes that could contribute to hair thinning.
January 2016 in “Lithuanian University of Health Sciences” Different diseases cause specific skin and hair follicle changes in dogs with alopecia.
August 1969 in “Archives of Dermatology” After calciphylaxis, rats showed incomplete skin and hair regeneration, resembling scar tissue with fewer hairs.
2 citations
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October 2010 in “Journal of dermatological treatment” External treatments can change hair growth patterns in nude mice.
1 citations
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September 2021 in “International journal of research - granthaalayah” Human hair has bipolar electrical charges because of a gap in the hair follicle's electromagnetic field.
June 2021 in “Clinical neuropsychopharmacology and therapeutics” Valproic acid can cause hair color change in older men.
January 2006 in “Journal of Clinical Dermatology” 149 citations
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June 2010 in “The FASEB journal” miR-31 regulates hair growth by controlling gene expression in hair follicles.
62 citations
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February 2018 in “Scientia Horticulturae” Mycorrhizal fungi improve root hair growth and nutrient uptake in trifoliate orange, especially when phosphorus is low.
48 citations
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January 2018 in “Scientific Reports” Hair analysis can reveal metabolic changes and potential pregnancy complications.
43 citations
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April 1996 in “Journal of Investigative Dermatology”
26 citations
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November 1968 in “The Lancet” Malnourished Andean Indian children had abnormal hair roots compared to healthy children.
25 citations
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July 2008 in “British Journal of Dermatology” CD10 and CD34 levels change during hair development and different hair growth stages, which could be important for hair regeneration treatments.
24 citations
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March 1995 in “British Journal of Dermatology” Etretinate therapy can cause hair loss by disrupting the hair growth cycle.
11 citations
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March 2023 in “Frontiers in Nutrition” Hair analysis can detect small changes in dietary zinc intake.
11 citations
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October 2020 in “General and comparative endocrinology” Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.
11 citations
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November 1966 in “Experimental Biology and Medicine” Hair diameter can indicate protein status in malnourished children if sample location is controlled.
8 citations
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February 2017 in “Archives of Dermatological Research” Intense pulsed light treatment effectively reduces underarm hair by making hair follicles smaller and extending their resting phase.
7 citations
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December 2010 in “대한의생명과학회지” Hair growth after depilation increases skin thickness, mast cell counts, and cell activity.
6 citations
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August 2013 in “Joint Bone Spine” Tocilizumab treatment was associated with significant hair regrowth in one patient and temporary hair loss followed by regrowth in another.
5 citations
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March 2021 in “International Journal of Dermatology” Biotin supplementation during isotretinoin treatment for acne may help maintain skin hydration and improve hair growth.
4 citations
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October 2018 in “Experimental Dermatology” Dermoscopy shows that diffuse alopecia areata progresses through specific hair growth stages.
2 citations
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September 2025 in “BMC Genomics” Maize root hairs adapt differently to mild and severe cold, with mild stress allowing some growth and severe stress stopping growth to focus on defense.
November 2024 in “Biophysical Chemistry” Hair structure changes immediately during perm treatment, with initial damage partially restored later.
October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
September 2024 in “Meditsinskiy sovet = Medical Council” As women age, hair follicles decrease in number and hair width tends to reduce.
December 2023 in “International Journal of Medical Arts” Transplanted hair follicles show significant changes after FUE, needing more research.
September 2023 in “Journal of the American Academy of Dermatology” Dermatologists can accurately detect smaller differences in hair density than previously thought.