January 2010 in “EPub Bayreuth (University of Bayreuth)” The study aimed to enhance physical measurement methods for examining micro-fiber surfaces, focusing on changes in hair surfaces due to different shampoo formulations. It investigated the physical changes at macro, micro, and nanoscale levels, emphasizing the friction and interaction properties of hair treated with hair care products. The research specifically examined three commercially available cationic polymers (Polyquaternium-10, Polyquaternium-87, and Jaguar C-13S) and their interaction with the negatively charged hair surface. A modified Universal Surface Tester provided results on hair friction properties, showing that all three polymers reduced friction forces, with Polyquaternium-87 achieving the highest reduction. The study also developed methods to separate various interaction forces, using a modified atomic force microscope to detect interactions between individual hairs.
September 2017 in “Journal of Investigative Dermatology” The research concluded that hyaluronic acid affects the formation and growth of hair follicle-like structures in a lab setting.
5 citations
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September 2012 in “Journal of Investigative Dermatology” Scientists can mimic hair disorders by altering genes in lab-grown human hair follicles, but these follicles lack some features of natural ones.
November 2025 in “Advanced Healthcare Materials” Charge-conversion chemistry improves hair-rebonding by enhancing penetration and strength.
51 citations
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September 2012 in “Biomacromolecules” Disulfide bonds make keratin in hair stronger and tougher.
7 citations
,
January 2020 in “International Journal of Molecular Sciences” Low-frequency electromagnetic fields can boost molecules related to hair growth in human skin cells.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
November 2025 in “Journal of Investigative Dermatology” NUL-5 may boost hair growth by improving hair follicle health and structure.
82 citations
,
January 1997 in “Forensic science international” Drugs can be incorporated into hair based on their chemical properties and hair pigmentation.
11 citations
,
April 2020 in “Nutrafoods - International Journal on Nutraceuticals, Functional Foods and Novel Foods” Taking Bioactive Collagen Peptides increases hair thickness.
12 citations
,
July 2016 in “British journal of dermatology/British journal of dermatology, Supplement” Different hair fiber development might explain why hair loss severity varies in patients with a specific genetic mutation, and treatments that thicken hair could help.
34 citations
,
October 1982 in “Journal of applied polymer science” Moisture content significantly affects how human hair breaks.
August 2025 in “Journal of Investigative Dermatology” Fibronectin is essential for hair follicle regeneration and may help rejuvenate aged skin.
Human hair follicle stem cells can be enriched by sticking to type IV collagen.
5 citations
,
October 2024 in “International Journal of Biological Sciences” A peptide from hair follicle stem cells can boost hair growth.
19 citations
,
May 2008 in “Applied spectroscopy” Human hair has different protein structures in its cuticle and cortex.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Hair dyeing changes hair structure, but new technologies help protect hair while coloring.
62 citations
,
December 2008 in “Journal of structural biology” Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.
September 2025 in “Digital Commons - RU (Rockefeller University)” Nfib in hair follicle stem cells boosts melanocyte stem cell growth and differentiation.
May 2024 in “Ultramicroscopy” Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.
February 2026 in “Biomedicine & Pharmacotherapy” MLPH helps hair grow by activating IGF-1 signaling in hair cells.
7 citations
,
January 1981 in “Springer eBooks” Certain small molecules and polymers can change hair's physical properties and how it feels by affecting the bonds within the hair.
24 citations
,
May 2019 in “PLOS genetics” Mutations in the HEPHL1 gene cause abnormal hair and cognitive issues.
15 citations
,
January 2020 in “ACS Applied Materials & Interfaces” Nanofiber structure helps regenerate hair follicles.
January 2019 in “Durham e-Theses (Durham University)” Advanced microscopy shows hair damage and keratin proteins' roles, aiding future cosmetic treatments.
58 citations
,
April 1993 in “Developmental Biology” bFGF delays hair growth in mice.
Different treatments change the strength and flexibility of human hair.
March 2026 in “Journal of Investigative Dermatology” Folliculin slows hair growth, and blocking it might help treat hair loss.
11 citations
,
July 2004 in “International Journal of Cosmetic Science” The conclusion is that a new method to measure hair shine was confirmed to match people's visual assessments.
January 2008 in “Linchuang pifuke zazhi” Betamethasone activates and increases the growth of certain skin cells from hair follicles.