January 2013 in “Sen'i Gakkaishi” Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.
25 citations
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October 1996 in “Dermatologic Clinics” Loose Anagen Syndrome causes easy-to-pull, thin hair, mainly in young girls, and improves with age.
20 citations
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September 2018 in “Journal of colloid and interface science” Modified keratin binds better to hair, especially bleached hair.
17 citations
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July 2018 in “International Journal of Cosmetic Science” Keratin-based particles safely improve hair strength, smoothness, and heat protection.
Blocking the Mitochondrial Pyruvate Carrier causes stress in hair follicles, which can be reduced by an ISR inhibitor.
9 citations
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July 2008 in “Archives of Dermatological Research” 15 citations
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January 1991 in “Mammalian Genome” 55 citations
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February 2014 in “Journal of Structural Biology” Human hair has a complex, variable structure with a consistent matrix and double-twist pattern.
8 citations
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March 2009 in “Differentiation” Adult vibrissa follicle stem cells can regenerate hair follicles, glands, and skin.
September 2017 in “Journal of Investigative Dermatology” Certain products and treatments can improve hair health and growth.
30 citations
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July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
93 citations
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July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
31 citations
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January 2004 in “Methods in cell biology” Hair and follicle keratins differ in structure and expression, especially in cysteine content.
15 citations
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August 2020 in “Analytical chemistry” Hair lipids do not protect against humidity.
July 2025 in “Scientific Reports” Fermented grapeseed oil effectively repairs and protects chemically damaged hair.
June 2025 in “Current Issues in Molecular Biology” Minoxidil, caffeine, and biotin can improve hair shine by restoring certain genes.
30 citations
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February 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” Plet-1 protein helps hair follicle cells move and stick to tissues.
30 citations
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August 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” TGase 3 helps build hair structure by forming strong bonds between proteins.
8 citations
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April 1997 in “Experimental Dermatology” hHbl gene is active in hair shaft cells and some pilomatricomas.
5 citations
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December 2020 in “International journal of biological macromolecules” Treatments improved hair surface and scale structure but didn't increase certain bonds in the hair cortex.
February 2026 in “International Journal of Molecular Sciences” PDLLA filler can improve hair thickness and shine by reducing age-related hair decline.
January 2025 in “Dermatology Research and Practice” The treatment effectively repairs and strengthens damaged hair by restoring natural lipids.
198 citations
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November 1989 in “The Journal of Cell Biology” Keratin K14 expression varies between hair follicles and epidermis, affecting cell differentiation.
102 citations
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July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
25 citations
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August 2010 in “Acta Biomaterialia” Researchers developed a method to grow hair follicle cells for transplantation using a special chip.
20 citations
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October 2021 in “Applied materials today” A new microneedle patch and yellow light therapy significantly promote hair regrowth.
13 citations
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April 2019 in “iScience” EGFR helps control how hair grows and forms without needing p53 protein.
March 2024 in “Tissue and cell/Tissue & cell” Telomerase-positive cells are mainly in the bulb matrix and outer root sheath of hair follicles.
January 2018 in “Elsevier eBooks” The document concludes that alopecia has significant social and psychological effects, leading to a market for hair loss treatments.
Surgical repigmentation can permanently restore color to white hair in vitiligo patients.