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December 2018 in “The American Journal of Dermatopathology” Early shedding of the inner root sheath in noninflamed hair follicles is a relatively specific sign of Central Centrifugal Cicatricial Alopecia.
6 citations
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December 1990 in “PubMed” Keratinocytes in hair follicles differentiate similarly to skin cells, with specific patterns in different regions.
July 2024 in “Journal of Investigative Dermatology” Hair follicles are crucial for maintaining skin barrier function.
January 2024 in “Uttar Pradesh journal of zoology” Chemical treatments severely damage hair cuticles, especially in previously treated hair.
January 2014 in “Journal of the Korean Society of Design Culture” The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.
4 citations
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May 2006 in “médecine/sciences” The hairless gene is crucial for hair health, and its mutations cause hair loss.
41 citations
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January 2014 in “Annals of Dermatology” Dermoscopic examination helps diagnose different types of hair loss conditions by showing specific patterns.
July 2016 in “Indian journal of science and technology” Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.
245 citations
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January 1998 in “Genes & Development” Hoxc13 gene is essential for hair, nail, and papilla development.
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January 2017 in “Sub-cellular biochemistry/Subcellular biochemistry” 63 citations
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July 2006 in “British Journal of Dermatology” Psoriasis causes changes in certain keratins and shrinks sebaceous glands in the scalp.
61 citations
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September 2008 in “Stem Cells” Most hair follicle stem cells do not protect their DNA by dividing it unevenly.
10 citations
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March 1973 in “Journal of Investigative Dermatology” 42 citations
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September 1985 in “British Journal of Dermatology” Trichothiodystrophy causes abnormal protein deposits and distortion in hair follicles.
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July 1993 in “Journal of Investigative Dermatology” March 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The dermal sheath's contraction is crucial for hair follicle regression and stem cell relocation.
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January 2002 in “Biochemical and biophysical research communications” Interferon β from hair cells stops the growth of other hair cells.
December 2004 in “Differentiation” 28 citations
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August 1992 in “Differentiation” A new pair of mouse keratins, 65 kD and 48 kD, are found in specific skin areas and are linked to a unique skin differentiation type.
June 2023 in “Experimental dermatology” Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.
8 citations
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February 1968 in “Australian Journal of Zoology” The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.
January 1997 in “Han-guk hyeonmigyeong hakoeji/Applied microscopy” The hair follicle's connection to connective tissue is weaker than the skin's.
32 citations
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June 2013 in “Journal of Investigative Dermatology” Mice without certain skin proteins had abnormal skin and hair development.
3 citations
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December 2018 in “Routledge eBooks” Hair is made of strong keratin fibers that protect against the environment.
23 citations
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April 2016 in “Journal of Visualized Experiments” The method successfully isolates hair follicle stem cells from mice for research.
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January 1987 in “PubMed” Woolly hair syndrome is a genetic condition causing frizzy, fragile hair.
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January 2019 in “Archives of Clinical and Medical Case Reports” Changing hair's surface and structure can help protect its natural oils from being washed away.
November 2024 in “Journal of Investigative Dermatology” Scalp hair follicle cells help protect and heal skin in certain skin conditions.
38 citations
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December 2006 in “Journal of Investigative Dermatology” Keratin patterns in hair follicles help understand hair growth and potential hair and nail disorders.
25 citations
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November 2020 in “Proceedings of the National Academy of Sciences” HoxC genes are crucial for normal hair and nail development.