May 2024 in “Proteome science” Bleaching damages hair by reducing the quality of keratin and keratin-associated proteins.
34 citations,
January 2011 in “Annals of dermatology/Annals of Dermatology” Using a hair dryer at 15 cm with continuous motion causes less damage than natural drying.
27 citations,
January 2015 in “International Journal of Trichology” The supplement helps improve hair growth and reduce hair shedding.
5 citations,
April 2022 in “Pharmaceutics” Minoxidil nanoparticles significantly boost hair growth in mice compared to regular minoxidil.
5 citations,
January 2006 in “Journal of veterinary medical science” RNA can be extracted from horsehair roots for analysis.
2 citations,
June 2021 in “Medicine” High levels of cortisol in hair are linked to a greater risk of brain aneurysm rupture.
1 citations,
November 2023 in “Cosmetics” Surfactants damage hair, but sealing the cuticle can prevent this.
13 citations,
May 2016 in “International journal of biological macromolecules” Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
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.
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.
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,
January 2016 in “Annals of Dermatology” Human hair contains more glycosaminoglycans in children than adults, and these compounds decrease with age, possibly affecting hair thickness.
2 citations,
May 2001 in “Current problems in dermatology” The conclusion is that effectively treating hair disorders is difficult due to the complex factors affecting hair growth and more research is needed to improve treatments.
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.
3 citations,
April 2011 in “Microscopy research and technique” Teratoma hair is similar to scalp hair but has a rougher surface and lower adhesive force.
4 citations,
August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
75 citations,
November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.
45 citations,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
2 citations,
December 2021 in “Scientific reports” Scalp hair sweating is a significant predictor of hair cortisol levels.
128 citations,
January 1996 in “Journal of analytical toxicology.” Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
25 citations,
May 2019 in “Heliyon” Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.
4 citations,
December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering” A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
9 citations,
June 1947 in “Analytical Chemistry” Cold waving solutions quickly reduce cystine to cysteine in hair.
7 citations,
February 1998 in “Polymer journal” Keratin structure in hair is stable at pH 5-6 but disrupts between pH 6-7.
53 citations,
July 2016 in “Cosmetics” Future hair cosmetics will be safer and more effective.
7 citations,
January 2022 in “Biomedicines” Cells from the lower part of hair follicles are a promising, less invasive option for immune system therapies.
3 citations,
June 2017 in “Journal of Biomaterials Applications” Keratin extract from human hair was found to promote hair growth in mice.
7 citations,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
42 citations,
January 2011 in “Journal of Biomedical Optics” Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.
1 citations,
December 2022 in “Journal of applied biological chemistry” TRP-hair essence protects hair from heat damage, maintains color, and strengthens hair.