31 citations
,
October 1992 in “Journal of Clinical Pharmacy and Therapeutics” Some medications can change hair color, especially chloroquine and cancer treatments.
September 2018 in “University of the Arts London Research Online (University of the Arts London)” L-arginine, hydrolysed keratin, and cystine-silanol copolymer can help protect hair from damage during and after bleaching.
20 citations
,
March 2020 in “International Journal of Biological Macromolecules” Lower acetylation makes chitin nanofibers thinner and more suitable for various uses.
46 citations
,
January 2009 in “Textile Research Journal” Researchers developed a new method to identify animal hair in textiles, which is effective for various fibers and more reliable than previous methods.
October 2021 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” The active ingredient improves the strength of damaged hair fibers.
4 citations
,
June 2020 in “JAAD case reports” Permanent hair dye may cause total hair loss.
27 citations
,
February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
3 citations
,
January 1985 in “Drug development and industrial pharmacy” Additives like ethanol and propylene glycol increase the release of zinc pyrithione from shampoo.
April 2025 in “BMC Chemistry” Thiadiazole chitosan conjugates improve hair manageability, moisture, and protection in conditioners.
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.
12 citations
,
June 2011 in “Journal of applied polymer science” L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.
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.
January 2017 in “Durham e-Theses (Durham University)” Chemical stressors damage hair structure but the skin's outer layer protects living cells.
9 citations
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January 2011 in “Journal of X-ray science and technology” Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.
January 1991 in “Acta Dermato Venereologica” A new method effectively visualizes keratin in hair without harsh chemicals.
October 2021 in “Authorea (Authorea)” New hair perming method using tyrosine is gentler and can be done with a blow-dryer.
January 1990 in “Advances in forensic haemogenetics” Human hair protein patterns are inherited genetically.
5 citations
,
November 2023 in “Journal of Advanced Research” New methods may change hair color and shape from the root, revolutionizing hair styling.
January 2008 in “Chinese Journal of Spectroscopy Laboratory” Cysteine formation on hair indicates damage, best detected at pH 4.5.
December 2017 in “JURNAL FARMANESIA” Red dragon fruit peel extract can effectively dye gray hair black.
62 citations
,
December 1941 in “Experimental biology and medicine” Eating phenylthiocarbamide made all the rats' hair go gray, but some returned to their original color after stopping.
14 citations
,
January 1996 in “Journal of Forensic Sciences” Hair can absorb and transfer opiates when soaked in water, with damaged hair absorbing more.
28 citations
,
January 2016 in “RSC Advances” A non-toxic formula using polycarboxylic acids strengthens and improves hair.
7 citations
,
October 1963 in “Textile Research Journal” Merino wool fibers change shape with moisture, while human hair shape stays the same.
43 citations
,
September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
152 citations
,
December 2003 in “Micron” As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.
82 citations
,
January 1997 in “Forensic science international” Drugs can be incorporated into hair based on their chemical properties and hair pigmentation.
November 2024 in “Biophysical Chemistry” Hair structure changes immediately during perm treatment, with initial damage partially restored later.
Oxidized hair can naturally regain strength and stability over six months.
1 citations
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December 2022 in “Skin Research and Technology” The technique helps measure how hair styling ingredients affect hair's stiffness and flexibility.