67 citations,
December 1990 in “The journal of cell biology/The Journal of cell biology” Researchers found genes for cysteine-rich proteins that form the protective layer of hair in humans and sheep.
8 citations,
March 2018 in “Cosmetics” UV radiation damages hair by creating holes and peeling cuticle layers.
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.
6 citations,
December 2018 in “International Journal of Cosmetic Science” CARB is a strong barrier in human hair that prevents dye penetration.
20 citations,
January 2003 in “Journal of oleo science” Chemical treatments and daily stresses damage hair, especially the cuticle layer.
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.
15 citations,
August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
13 citations,
June 2011 in “International Journal of Cosmetic Science” Human hair absorbs calcium and magnesium from tap water, affecting its structure and styling properties.
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.
6 citations,
September 2018 in “ACS applied bio materials” Calcium fatty acid deposits found in human hair can change its appearance and feel.
2 citations,
December 2022 in “Journal of structural biology” Older thin hair is not just thinner but also has different shape, structure, and stiffness.
8 citations,
January 2016 in “Skin research and technology” The 12-point scale is better for evaluating small changes in hair condition after using hair care products.
30 citations,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
15 citations,
January 1998 Frequent blow-drying causes cracks and breakage in hair cuticles.
15 citations,
July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
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.
May 2017 in “Journal of microscopy and ultrastructure” Water quality affects mineral content in hair, and coconut oil can protect against damage.
10 citations,
January 2010 in “International journal of trichology” Keratin-associated proteins are part of the developing hair fiber cuticle.
4 citations,
January 2017 in “Biological & pharmaceutical bulletin” Inhibiting ALOX12 can help hair cuticle maturation by increasing S100A3 citrullination.
9 citations,
July 2018 in “Acta biomaterialia” Eyelash curvature is linked to the thickness of the cuticle layer at the root.
1 citations,
January 2018 in “Journal of microscopy and ultrastructure” The method can identify minerals in hair from water, and using coconut oil or conditioner can prevent mineral buildup.
6 citations,
May 2005 in “Journal of dermatological science” The study found nine new hair protein genes in human hair follicles.
48 citations,
May 1991 in “The journal of investigative dermatology/Journal of investigative dermatology” Trichohyalin is also found in the outer layers of normal human skin.
28 citations,
November 2018 in “Journal of structural biology” Different populations have distinct hair structures related to their ancestry.
18 citations,
November 2010 in “Journal of morphology” Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.
9 citations,
April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
7 citations,
August 2018 in “Journal of cosmetic dermatology” Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.
3 citations,
January 2015 in “Mathematical problems in engineering” Hair damage increases significantly with higher temperatures and longer heating times.
July 2016 in “Indian journal of science and technology” Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.
20 citations,
September 2018 in “Journal of colloid and interface science” Modified keratin binds better to hair, especially bleached hair.