Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
9 citations
,
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.
2 citations
,
June 2018 in “Cosmetics” AMPD is a better and less damaging alternative to ammonium hydroxide for hair bleaching.
1 citations
,
June 2023 in “Skin Research and Technology” Hair-coating shampoos dye better initially, but hair-oxidation shampoos keep color longer and may damage hair more.
1 citations
,
August 2022 in “Chemical engineering journal advances” Scientists made human hair magnetic by coating it with special nanoparticles.
January 2026 in “ChemistrySelect” The bio-based hair serum is a sustainable and effective alternative to silicone serums, offering better hair protection and eco-friendly benefits.
December 2023 in “Journal of molecular structure” Hair treatments and dehydration affect hair's lipid and protein behavior, influencing its flexibility and appearance.
1 citations
,
November 2022 in “DOAJ (DOAJ: Directory of Open Access Journals)” Male and female human hairs have different microscopic structures that can help in forensic analysis.
6 citations
,
September 2018 in “ACS applied bio materials” Calcium fatty acid deposits found in human hair can change its appearance and feel.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
December 2025 in “Cosmetics” The bio-based complex effectively repairs and protects chemically damaged hair.
25 citations
,
November 2012 in “Thermochimica Acta” Internal lipids in keratin fibers, like wool and hair, reduce water absorption and release.
The KRT84 gene is linked to better wool quality in Gansu Alpine Fine-wool sheep.
KRTAP6 genes affect wool quality in sheep.
51 citations
,
September 2012 in “Biomacromolecules” Disulfide bonds make keratin in hair stronger and tougher.
5 citations
,
February 2022 in “Animals” Sodium sulfide slows wound healing, while electric shaving is the safest for preoperative hair removal.
April 2021 in “Indian Journal of Animal Research” Goat skin has collagen, elastic, and reticular fibers, with hair follicles increasing in depth as goats age.
January 2017 in “대한미용학회지” The cuticle layer in hair follicles thickens during keratinization due to incomplete cytosol loss.
30 citations
,
April 2017 in “Journal of structural biology” Human hair keratin fibers have a detailed nano-scale structure that changes with different conditions.
January 2007 in “Sen'i Gakkaishi” Mf-rich hair degrades more than Ma-rich hair, especially with Proteinase K.
May 2026 in “Jurnal Pendidikan Kimia Fisika dan Biologi” Rebonding damages hair cuticles, causing erosion and cracks.
3 citations
,
February 2019 in “Animal biotechnology” The PLP2 gene affects cashmere fiber quality in goats and is linked to hair growth and loss.
2 citations
,
January 2013 Hair can help solve crimes by revealing personal and chemical information.
48 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
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.
12 citations
,
February 2006 in “Lipids” Hair texture changes with age due to varying levels of lipids.
September 2017 in “Journal of Investigative Dermatology” Fermented mackerel oil was found to promote hair growth by activating certain cell signals and increasing cell growth.
April 2025 in “INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT” Hair histology helps identify animal species in forensic investigations.
42 citations
,
April 2008 in “Acta materialia” Different ethnicities and treatments affect human hair strength and structure.
14 citations
,
April 2000 in “Animal Science/Animal science” Nutrients like vitamins, copper, zinc, and amino acids are crucial for healthy hair and wool growth.