93 citations
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May 1990 in “The EMBO Journal” Mice with extra sheep genes had hair that fell out and regrew in cycles.
30 citations
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May 2010 in “British Journal of Dermatology” Intermediate hair follicles are a better model for studying hair growth and testing hair loss treatments.
2 citations
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September 2003 in “Annals of Plastic Surgery” The document concludes that hair from the forehead can be used to reconstruct eyebrows.
August 2022 in “Nutrients” Nutritional supplements may help improve hair growth in female pattern hair loss.
28 citations
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October 1985 in “The Journal of Cell Biology” Researchers isolated and identified structural components of human hair follicles, providing a model for studying hair formation.
5 citations
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February 1998 in “Polymer” Human hair keratin has a 40% α-helix structure that changes to a random coil in 8 M urea.
62 citations
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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.
9 citations
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April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
4 citations
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January 2015 in “Sen'i Gakkaishi” Hair and wool strength is affected by the number and type of bonds in their protein structures, with hair having more protein aggregates than wool.
15 citations
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January 1993 in “DNA sequence” KRT2.13 gene is similar to KRT2.9 but not expressed in hair follicles.
116 citations
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April 1986 in “The journal of cell biology/The Journal of cell biology” Trichohyalin is a protein in hair follicles that helps form hair filaments.
65 citations
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February 1992 in “Development” Type II keratin genes are crucial for hair follicle differentiation and have a conserved structure and expression pattern.
39 citations
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June 2012 in “Journal of Structural Biology” Disulfide bonds are crucial for hair structure during keratinization.
39 citations
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December 1998 in “Journal of Cell Science” The LEF-1 binding site enhances gene expression in hair follicles, with other proteins aiding specific regulation.
22 citations
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January 2006 in “Journal of Structural Biology” Hair follicles form hard α-keratin filaments in four steps, showing structural differences.
19 citations
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December 2006 in “Journal of Structural Biology” Type I and Type II keratin chains can form heterodimers despite sequence differences.
22 citations
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June 2012 in “PLOS ONE” Cholesterol-related compounds can stop hair growth and cause inflammation in a type of scarring hair loss.
November 2022 in “Journal of Investigative Dermatology” Occipital hair follicles in male pattern baldness respond uniquely to testosterone, not androgen-insensitive.
46 citations
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November 1998 in “Experimental Cell Research” K15 gene is mainly active in the basal layers of hair follicles and epithelia, aiding early skin cell development.
August 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Using natural polyphenol cross-linkers like tannic acid and green tea extract in perm treatments improves curling and protects hair.
7 citations
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February 1998 in “Polymer journal” Keratin structure in hair is stable at pH 5-6 but disrupts between pH 6-7.
5 citations
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March 2012 in “Journal of Investigative Dermatology” Vitamin D receptor and mediator 1 are crucial for healthy skin and hair growth.
May 2020 in “Research Square (Research Square)” Researchers found four key stages of cell development that are important for hair growth and shedding in cashmere goats.
June 2025 in “Frontiers in Physiology” Prostaglandin F2α may help treat hair loss by promoting hair growth.
8 citations
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April 2017 in “Journal of The Royal Society Interface” Giant axonal neuropathy changes the structure of keratin in human hair.
December 2025 in “BMC Medical Genomics” Hair follicles can be used to study gene expression and understand conditions like COPD.
1 citations
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April 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Aspartic acid at 0.75% makes perms more effective and less damaging to hair.
40 citations
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February 1994 in “Journal of Investigative Dermatology” Giant axonal neuropathy changes the structure of keratin in human hair, making it stiffer and stronger.