7 citations
,
January 1959 in “Canadian Journal of Chemistry” Human and horse hair have similar end groups to wool and feathers.
February 2026 in “Optics” Stretching wool changes its structure and improves fiber alignment.
January 2019 in “Journal of the American Leather Chemists Association” Improved mink skin processing can weaken hair attachment.
1 citations
,
January 1995 in “Lincoln University Research Archive (Lincoln University)” Wool growth is mainly controlled by external factors and specific proteins, not the follicles themselves.
January 2014 in “China Animal Husbandry & Veterinary Medicine” The KAP8-1 gene affects skin, hair follicle development, and wool quality in different sheep varieties.
117 citations
,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
85 citations
,
October 2007 in “International Journal of Dermatology” Curly hair shape is due to uneven growth patterns in the hair follicle.
2 citations
,
July 2013 in “Journal of Animal Physiology and Animal Nutrition” Shorthaired and hairless cat breeds excrete more felinine than longhaired breeds.
11 citations
,
April 2022 in “Biophysical Journal” Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
3 citations
,
January 1998 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Hair keratins are mainly on macrofibrils in the cortex and in the endocuticle in the cuticle.
62 citations
,
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.
17 citations
,
July 2018 in “International Journal of Cosmetic Science” Keratin-based particles safely improve hair strength, smoothness, and heat protection.
January 2000 in “Neuroscience Research” January 1985 in “OhioLink ETD Center (Ohio Library and Information Network)” 40 citations
,
December 2010 in “Human Genetics” 2 citations
,
January 1990 307 citations
,
November 1968 in “Journal of neurophysiology” Cats' hairy skin has different touch receptors connected by myelinated fibers.
7 citations
,
March 2019 in “Journal of cosmetic dermatology” African hair has the most lipids, while Caucasian hair is more hydrated and stronger.
7 citations
,
June 2020 in “JAAD Case Reports” Artificial hair implants can still cause side effects despite improvements.
August 1989 in “Proceedings ... annual meeting, Electron Microscopy Society of America/Proceedings, annual meeting, Electron Microscopy Society of America” The research provided a detailed view of the non-keratinous parts of human hair fibers.
May 2024 in “Ultramicroscopy” Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.
May 2023 in “Journal of Scientific Research”
29 citations
,
August 2005 in “Biopolymers” L-cysteine slows down the breaking of bonds in hair due to electrostatic interactions.
2 citations
,
September 2017 in “Mehmet Akif Ersoy Üniversitesi Veteriner Fakültesi dergisi” Specific genes influence hair growth and quality in goats and sheep.
4 citations
,
June 2021 in “Scientific Reports” Hair fiber shape and curvature are not significantly linked when ancestry is considered.
36 citations
,
June 1988 in “Australian Journal of Biological Sciences” Mouse epidermal growth factor injections in sheep affected wool growth and skin, but saline did not.
52 citations
,
March 2015 in “Tissue Engineering Part C Methods” 3D images of skin show collagen is evenly spread, but elastic fibers are fewer near hair follicles.
July 2009 in “International Journal of Cosmetic Science” Japanese women's curved hair has an uneven internal structure and varied amino acid composition.
The 16th-century mummy's hair was well-preserved due to a calcium coating.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.