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.
October 1988 in “Pediatric research” Certain maturity signs appear before and after the first release of sperm in boys.
132 citations
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September 2009 in “Experimental Dermatology” A reliable system was developed to distinguish hair growth stages, aiding in identifying hair growth promoters or inhibitors.
23 citations
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September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” NF-κB is crucial for different stages and types of hair growth in mice.
19 citations
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March 2004 in “The Journal of Clinical Endocrinology & Metabolism” Testosterone and letrozole treatment speeds up puberty in boys with delayed development.
14 citations
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July 2017 in “Fitoterapia” Oleanolic acid promotes hair growth by increasing cell proliferation through the Wnt/β-catenin pathway.
November 2007 in “Neuro-chirurgie/Neurochirurgie” Cyproterone acetate is a safe treatment that causes mild feminizing effects and is more effective with added estrogens.
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.
5 citations
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May 2021 in “Small ruminant research” The study found specific proteins that could mark different growth stages of cashmere goat hair and may help improve cashmere production.
31 citations
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September 2012 in “Journal of biological chemistry/The Journal of biological chemistry” The right amount of retinoic acid is essential for normal hair growth and development.
7 citations
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February 1962 in “Experimental Biology and Medicine” Male and female mice have different lipid compositions in their skin during hair growth cycles.
December 2025 in “Actas Dermo-Sifiliográficas” Bicalutamide may improve hair growth in postmenopausal women with mild side effects.
22 citations
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April 2015 in “Current problems in dermatology” Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.
9 citations
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February 2018 in “Journal of The American Academy of Dermatology” Researchers developed a new method using methylene blue staining to more accurately identify the growth stage of human hair follicles.
1 citations
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April 2016 in “Journal of Investigative Dermatology” Zinc deficiency causes reversible hair loss by disrupting hair growth and stem cell function.
2 citations
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February 2024 in “International Journal of Molecular Sciences” Negative Pressure Wound Therapy speeds up wound healing by reducing inflammation and promoting skin cell growth.
12 citations
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September 2020 in “Stem cell research & therapy” Adult skin cell-based early-stage skin substitutes improve wound healing and hair growth in mice.
6 citations
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May 1987 in “Acta dermato-venereologica” Syphilis patients showed abnormal hair root changes, with no difference between primary and secondary stages.
45 citations
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April 2001 in “The journal of investigative dermatology/Journal of investigative dermatology” Different Myc family proteins are located in various parts of the hair follicle and may affect stem cell behavior.
14 citations
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May 2020 in “Archiv für Tierzucht” Researchers identified genes that may affect hair growth in Cashmere goats.
14 citations
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January 2020 in “PloS one” Timing of light therapy affects horse coat growth, with photoperiod being crucial.
1 citations
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May 2013 in “PubMed” The document concludes that female pattern baldness involves hair thinning, is classified differently than in men, and is assessed using the Ludwig classification. It also explains the hair growth cycle stages.
research Hair
January 1983 in “Elsevier eBooks” Hair grows from living roots, is made of dead keratin, and goes through growth, rest, and shedding stages.
521 citations
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January 1954 in “Physiological Reviews” Hair growth is cyclic and influenced mainly by local factors.
109 citations
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April 1998 in “Journal of Investigative Dermatology” HGF/SF injections can stimulate hair growth and increase hair follicle size in mice.
92 citations
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June 2005 in “Journal of Investigative Dermatology” All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.
77 citations
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January 1993 in “Skin Pharmacology and Physiology” Steroids stop hair growth temporarily but don't block the signals that start it.
26 citations
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October 2007 in “Experimental Dermatology” L-Carnitine-L-tartrate may help hair grow and prevent hair loss.
20 citations
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January 1995 in “Cells tissues organs” Changing light periods synchronized wool growth cycles in sheep.
1 citations
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January 1963 in “The Anatomical Record” Glyceride levels in mouse skin are higher during hair growth.