19 citations,
May 2008 in “Applied spectroscopy” Human hair has different protein structures in its cuticle and cortex.
17 citations,
October 2017 in “Scientific reports” Fine wool sheep have more genes for wool quality, while coarse wool sheep have more for skin and muscle traits.
May 2024 in “International Journal of Cosmetic Science” Disulfide bonds are crucial for hair's strength, especially when wet.
Oxidized hair can naturally regain strength and stability over six months.
38 citations,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
27 citations,
July 1997 in “PubMed” The harlequin ichthyosis mouse mutation causes thick skin and early death, resembling a human skin disorder.
8 citations,
May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
September 2023 in “Journal of Natural Fibers” Drying hair with a microfiber towel better maintains hair strength and structure than using a cotton towel or blow-drier.
February 2022 in “Fibers” Scientists created a non-toxic, sugar-based hair product that can style hair without damage.
3 citations,
January 2021 in “ScienceAsia” Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.
98 citations,
June 2001 in “Journal of biological chemistry/The Journal of biological chemistry” A cluster of sulfur-rich hair protein genes was found on chromosome 17.
42 citations,
January 2017 in “Genes” The gene KAP22-1 affects wool yield and fiber shape in sheep.
17 citations,
July 2018 in “International Journal of Cosmetic Science” Keratin-based particles safely improve hair strength, smoothness, and heat protection.
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.
10 citations,
September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
8 citations,
December 2003 in “Materials Research-ibero-american Journal of Materials” Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.
1 citations,
July 2019 in “Microscopy Today” Microfluorometry effectively measures how much polymer coats and penetrates hair, useful for evaluating hair products.
December 2022 in “Deleted Journal” Sheep wool keratin solution safely and effectively promotes hair growth.
63 citations,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
53 citations,
July 2011 in “Biomaterials” Human liver cells stick to hair protein materials mainly through the liver's asialoglycoprotein receptor.
52 citations,
August 1978 in “Journal of Applied Polymer Science” Human hair's ability to get wet is complex and can change with treatments, damage, and environment.
47 citations,
January 2017 in “RSC Advances” Keratin peptides can change hair shape gently without harsh chemicals.
42 citations,
January 2009 in “Colloids and Surfaces B: Biointerfaces” A certain surfactant sticks to human hair, making it change from water-repelling to water-attracting, which could help in hair conditioning.
41 citations,
November 2020 in “Colloids and surfaces. B, Biointerfaces” Different hair protein amounts change the strength of keratin/chitosan gels, useful for making predictable tissue engineering materials.
40 citations,
June 2013 in “Journal of cosmetic dermatology” Brazilian keratin treatments can straighten hair but may contain harmful formaldehyde.
38 citations,
October 2011 in “Analytical biochemistry” Hair proteins have weak spots in their α-helical segments.
29 citations,
November 2011 in “Veterinary pathology” The study found that mouse sweat glands develop before birth, mature after birth, and have specific keratin patterns.
23 citations,
January 2015 in “Stem cells international” Coating surfaces with human hair keratin improves the growth and consistency of important stem cells for medical use.
17 citations,
November 2017 in “Asian-Australasian journal of animal sciences” Certain gene mutations are linked to wool quality in sheep and could help in breeding for better wool.
11 citations,
February 2018 in “Amino acids” Copper and iron cause keratin damage in hair by converting methionine to homocysteine.