January 2024 in “Uttar Pradesh journal of zoology” Chemical treatments severely damage hair cuticles, especially in previously treated hair.
3 citations,
January 2007 in “Journal of health science” The enzymatic method can effectively identify chemical treatments on hair.
28 citations,
November 2018 in “Journal of structural biology” Different populations have distinct hair structures related to their ancestry.
17 citations,
June 2011 in “The journal of investigative dermatology/Journal of investigative dermatology” The G60S Connexin43 mutation causes hair growth issues and poor hair quality in mice, similar to human ODDD patients.
8 citations,
May 2020 in “International journal of biological macromolecules” Certain treatments can increase protein binding to natural hair but are less effective on permed hair.
23 citations,
August 2019 in “Proceedings of the National Academy of Sciences of the United States of America” Pollution exposure speeds up hair damage.
A new system for classifying curly hair types using precise measurements can improve hair care products and cultural inclusion.
75 citations,
November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.
15 citations,
August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
30 citations,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
13 citations,
March 2006 in “International Journal of Cosmetic Science” The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.
13 citations,
March 2019 in “Journal of cosmetic dermatology” Heat damages hair, with Asian hair losing more protein than Caucasian hair.
12 citations,
July 2016 in “Forensic science international” The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.
2 citations,
March 2018 in “ACS Sustainable Chemistry & Engineering” Heating human hair creates hollow microtubes with smooth surfaces.
25 citations,
February 2007 in “Forensic science international” Different hair cleaning methods caused varying levels of damage to the hair's outer layer.
21 citations,
October 2006 in “International Journal of Dermatology” Asian hair is stronger and more damage-resistant than Caucasian hair due to a thicker cuticle layer.
8 citations,
March 2018 in “Cosmetics” UV radiation damages hair by creating holes and peeling cuticle layers.
Acidic sandy clay damages archaeological hair the most, while dry conditions preserve but make it brittle; silicone oil can help keep the hair flexible.
25 citations,
May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
27 citations,
May 2019 in “Cosmetics” The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.
1 citations,
November 2003 in “Humana Press eBooks” AFM helps study hair surfaces for dermatology, cosmetics, and forensics.
4 citations,
January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
15 citations,
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with extra human KLK14 had hair and skin problems, including weaker cell bonds and inflammation, linked to Netherton syndrome.
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.
Hair fibers degrade and change color in very basic water.
45 citations,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
40 citations,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
40 citations,
February 2002 in “International Journal of Dermatology” Permanent hair dye damages hair but it mostly recovers after 8 weeks; using certain hair care products can help repair it.
19 citations,
January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
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.