The 16th-century mummy's hair was well-preserved due to a calcium coating.
21 citations
,
June 2002 in “International Journal of Cosmetic Science” Advancements in hair keratin research could lead to better hair health treatments.
November 2024 in “Journal of Microscopy” Human hair varies in structure based on curl type, with high curl hair showing the most differences.
34 citations
,
December 1984 in “Journal of Cutaneous Pathology” Monilethrix hair issues are due to problems in the hair's internodes.
13 citations
,
October 2008 in “PubMed” Japanese women's curved hair has an uneven internal structure and varying amino acid composition.
1 citations
,
January 2007 in “AIP conference proceedings” High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.
January 2026 in “Indian Journal of Dermatopathology and Diagnostic Dermatology” Corkscrew hairs can help diagnose trichotillomania.
12 citations
,
December 2011 4 citations
,
July 2010 in “International Journal of Cosmetic Science” Curved human hair has different structures on its convex and concave sides.
September 2019 in “University of the Arts London Research Online (University of the Arts London)” Plant oils and polymers can help protect African hair from damage during styling.
119 citations
,
November 2016 in “American journal of human genetics” Mutations in three genes cause Uncombable Hair Syndrome, leading to frizzy hair that can't be combed flat.
15 citations
,
December 1972 in “Journal of Investigative Dermatology” 18 citations
,
August 2009 in “Skin Research and Technology” OCT can identify hair structures, but chemical treatments can damage them.
Daily hair care may cause holes in hair fibers.
9 citations
,
January 1980 in “Dermatology” Hair casts may be caused by repetitive hair pulling or styling and are often misdiagnosed.
21 citations
,
April 2004 in “Australasian Journal of Dermatology” A 3-year-old girl has a rare condition causing sparse hair and nail issues, with minimal improvement from treatment.
55 citations
,
November 2010 in “Development” Hair follicles in mutant mice self-organize into ordered patterns within a week.
15 citations
,
August 2010 in “Annals of saudi medicine/Annals of Saudi medicine” Hair tourniquet syndrome is a rare condition where hair wraps around an infant's body part, needing quick removal to prevent damage.
1 citations
,
January 2016 in “Journal of cosmetology & trichology” Trichoscopy helped diagnose and treat a child's fungal scalp infection by spotting specific hair shapes.
February 2019 in “IP Indian journal of clinical and experimental dermatology” Continuous use of hair relaxers and curlers can cause hair loss, dryness, dandruff, thinning, greying, and split ends.
22 citations
,
October 1996 in “Dermatologic clinics” Understanding intermediate filaments helps explain hair health and related diseases.
September 2017 in “Journal of Investigative Dermatology” Hair care products used for 4 weeks made hair smoother.
12 citations
,
September 1982 in “Journal of Investigative Dermatology”
March 2023 in “International Journal of Dermatology” COVID-19 can cause hair to become progressively kinked.
18 citations
,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
28 citations
,
April 1988 in “Archives of Dermatological Research” 73 citations
,
May 2009 in “Proceedings of the National Academy of Sciences” Disrupting the Sox21 gene in mice causes hair loss and regrowth cycles.
13 citations
,
November 2012 in “International Journal of Dermatology” Curly hair breaks more easily, especially with chemical treatments, but simpler grooming reduces breakage.
Prussian Blue causes hair cuticles to detach, weakening the hair.
November 2025 in “Skin Health and Disease” Autosomal recessive woolly hair is rare and involves tightly coiled hair without other health issues.