15 citations
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May 2013 in “American Journal of Medical Genetics - Part A” People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.
September 2016 in “Journal of dermatological science” TSC2 is crucial for proper hair follicle development and patterning.
235 citations
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July 1999 in “Journal of biological chemistry/The Journal of biological chemistry” Human hair is made up of different keratins, some strong and some weak, with specific types appearing at various stages of hair growth.
11 citations
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January 1981 in “Cells Tissues Organs” Human hair cuticle has five cell layers with specific junctions and granules.
2 citations
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January 1987 in “PubMed” Woolly hair syndrome is a genetic condition causing frizzy, fragile hair.
35 citations
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November 1931 in “Journal of Genetics” Hairless mice lack fur due to a genetic mutation affecting skin response, not hormone issues.
2 citations
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May 2022 in “International journal of trichology” Plica neuropathica is a tangled hair condition that may be caused by hair damage or psychiatric issues and is treated by cutting the hair and addressing mental health.
3 citations
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January 2015 in “Mathematical problems in engineering” Hair damage increases significantly with higher temperatures and longer heating times.
296 citations
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October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
33 citations
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June 2017 in “Developmental Biology” Mice can correct hair follicle orientation without certain genes, but proper overall alignment needs those genes.
12 citations
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April 2009 in “Agricultural sciences in China/Agricultural Sciences in China” Hoxc13 gene expression and skin thickness change similarly during cashmere goat hair follicle development.
6 citations
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August 1937 in “Journal of the Society of Chemical Industry” 92 citations
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April 2009 in “Journal of Investigative Dermatology” The Celsr1 gene is crucial for normal hair patterning in mice.
September 2021 in “Mağallaẗ al-Muẖtar li-l-ʿulūm” Two sisters have rare hair disorders causing short, fragile, kinky hair.
37 citations
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January 1997 in “Journal of Pharmaceutical Sciences” Hairless rats absorb substances through their skin more easily than hairy rats.
51 citations
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March 1990 in “Journal of Investigative Dermatology”
New methods to classify curly hair types were developed based on shape and strength.
12 citations
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August 1984 in “Genetics Research” The N gene affects the protein makeup of mouse hair.
3 citations
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March 2023 in “Annals of the New York Academy of Sciences” Mutations in claudin-1 and claudin-3 cause hair loss in baby mice.
71 citations
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August 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Hair keratin-associated proteins are essential for strong hair, with over 80 genes showing specific patterns and variations among people.
8 citations
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May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
1 citations
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August 2024 in “Transgenic Research” Activated β-catenin affects hair growth and skin thickness, and changes are reversible.
1 citations
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June 2014 in “[Thesis]. Manchester, UK: The University of Manchester; 2014.” Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.
July 1995 in “Journal of Dermatological Science”
12 citations
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June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
6 citations
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June 1981 in “PubMed” Whisker hair in young people might predict severe future hair loss.
27 citations
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September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
February 2025 in “BMC Veterinary Research” Keratin proteins are crucial for hair growth in cashmere goats.
April 2017 in “Journal of Dermatological Science” Asymmetric hair follicle differentiation causes the unique shape of kinky hair.
45 citations
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January 2012 in “Experimental Dermatology” Human hair follicles switch between active and resting phases unpredictably.