March 2023 in “International Journal of Dermatology” COVID-19 can cause hair to become progressively kinked.
26 citations
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July 1993 in “Journal of Investigative Dermatology”
39 citations
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August 2018 in “Scientific reports” Claudin-1 is important for the barrier function and growth of hair.
66 citations
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June 2004 in “Biophysical Journal” Hard α-keratin in hair has a unique, nonordered structure, different from other fibers.
3 citations
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July 2019 in “Fibers And Polymers/Fibers and polymers” 15 citations
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January 2011 in “International journal of trichology” Using a hot iron on wet hair can cause dry, brittle hair with air bubbles inside.
16 citations
,
January 2017 in “Physical chemistry chemical physics/PCCP. Physical chemistry chemical physics” The 3D structure of a key hair protein was modeled, revealing specific helical structures and stabilization features.
56 citations
,
January 1970 in “Cell and Tissue Research” December 1978 in “Indian Journal of Otolaryngology and Head & Neck Surgery”
September 2021 in “Mağallaẗ al-Muẖtar li-l-ʿulūm” Two sisters have rare hair disorders causing short, fragile, kinky hair.
1 citations
,
March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
1 citations
,
January 2014 in “Medical Entomology and Zoology” 85 citations
,
January 1990 91 citations
,
December 2000 in “The journal of cell biology/The Journal of cell biology” Scientists successfully created mouse hair proteins in the lab, which are stable and similar to natural hair.
January 2003 in “Swinburne Research Bank (Swinburne University of Technology)” 2 citations
,
January 1987 in “PubMed” Woolly hair syndrome is a genetic condition causing frizzy, fragile hair.
1 citations
,
April 2019 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
27 citations
,
September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
3 citations
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June 2020 in “Developmental Cell” Feather patterns are influenced by enhancers and chromatin looping, and the structure of protein complexes important for hair growth has been detailed.
10 citations
,
November 2016 in “International Journal of Cosmetic Science” A tough membrane between the outer and inner layers of human hair protects it from damage.
4 citations
,
November 2016 in “The Journal of Dermatology” Pili torti hair is fragile due to loose keratin filaments and weak disulfide bonds.
January 2021 in “Nasza Dermatologia Online” Plica polonica is a rare condition where hair becomes irreversibly tangled, and the treatment is to cut the matted hair.
September 2014 in “Journal of the American Academy of Dermatology” The girl likely has Loose anagen hair syndrome, which may improve on its own or with minoxidil.
30 citations
,
July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
9 citations
,
April 2019 in “Journal of Structural Biology” Keratin fibers in hair twist left-handed.
745 citations
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February 1992 in “Trends in genetics” Hair follicles create different cell layers and proteins, controlled by various molecules.
February 2019 in “PubMed” The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.
42 citations
,
September 1985 in “British Journal of Dermatology” Trichothiodystrophy causes abnormal protein deposits and distortion in hair follicles.
February 2023 in “Cosmoderma” 147 citations
,
September 2001 in “Computer graphics forum” The authors created a realistic and efficient method to simulate hair movement by combining fluid dynamics with individual hair strand behavior.