2 citations
,
April 2019 in “Experimental Dermatology” This study observed that applying a pulling force to hair follicles led to significant compression of nuclei in certain cell layers and distinct collagen changes at different follicle depths.
39 citations
,
July 2015 in “British Journal of Dermatology” This article discusses the pseudo 'fringe sign' in frontal fibrosing alopecia, highlighting that it is not solely related to traction, and it reports no new clinical results.
22 citations
,
January 1985 This study observed that hair cuticles experience greater water-induced plasticization than hair cortex, affecting the torsional rigidity of hair fibers, which may help predict hair setting behavior.
April 2023 in “Journal of Investigative Dermatology” This study found that the dermal sheath smooth muscle regulates hair follicle progenitor cell death during hair regression through mechanical signaling of the TGF-β pathway.
1 citations
,
June 2019 in “IEEJ Transactions on Sensors and Micromachines” This study reports the development of a MEMS silicon-hair device capable of detecting minute forces and moments, replicating the sensory functions of human hair follicles with high sensitivity.
January 2021 in “Advanced Biomedical Engineering” This study found that hair implant needles with longer point lengths and smaller bevel angles required less total work for insertion, which corresponded with surgeons' perceptions of insertion force differences.
February 2019 in “PubMed” This study explores torsional measurements of single hair fibers to differentiate the effects of cosmetic treatments on hair structure, highlighting their potential to reveal shear stiffness changes related to cuticle damage.
December 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” This study observed that in live rodents, actin filaments adjust their structure to facilitate membrane transfer between cellular compartments; linear filaments stabilize fused membranes, while branched filaments, connected by the protein Ezrin, drive integration, demonstrating actin's role in adapting to membrane biophysical changes.
2 citations
,
January 2002 in “PubMed” This study introduces a new test using a pendulum device to assess the bending stiffness of hair fibers, which can evaluate the effects of different hair treatments.
7 citations
,
July 2025 in “The Journal of Physiology” This study found that human C-tactile afferents respond to hair deflection, suggesting a functionally relevant anatomical relationship to hair follicles similar to that observed in mice.
In this hospital-based observational study involving 30 participants, researchers found no statistically significant difference in the force needed to pluck anagen versus telogen hair in the frontal and occipital scalp regions of women with female pattern hair loss.
1 citations
,
January 2001 in “PubMed” This study proposes that the terminal tuft structure in sensory nerve endings, involving Schwann cell processes and axon fingers, potentially plays a role in mechano-electric transduction in rats.
April 2012 in “Informa Healthcare eBooks” Temporal triangular alopecia is a lifelong condition with hairless patches on the side of the head that may be present from birth.
6 citations
,
December 2017 in “International Journal of Dermatology” Traction alopecia is hair loss from pulling on hair too much.
5 citations
,
September 2005 in “Hair transplant forum international” This article discusses the importance of understanding hair direction and angulation in hair restoration but reports no new experimental findings.
15 citations
,
May 2009 in “Chemical Physics Letters” This study demonstrated that a metric based on rotational echo intensity in 2H magic-angle spinning NMR can derive kinetic information for conformational exchange without complex modelling, achieving activation barriers consistent with prior findings.
November 2021 in “International journal of research - granthaalayah” This study presents additional data suggesting that the absence of nerve endings in certain segments of human hair follicles influences the asymmetrical distribution of electrical charges, as indicated by no precipitation of Potassium Ferricyanide crystals.
9 citations
,
July 2018 in “Acta biomaterialia” This study reports a good correlation between the curvature of human eyelashes and the displacement of the neutral axis, influenced by the non-uniform thickness of the outer cuticle layer.
10 citations
,
November 1984 in “Journal of Colloid and Interface Science” The study found that the Marangoni effect causes the uneven wetting of surfactant-coated hair due to the surfactant moving into the water.
1 citations
,
January 2016 in “Dermatology Online Journal” This case report documents a rare instance of triangular temporal alopecia in an adult woman, emphasizing the importance of correct diagnosis to avoid unnecessary treatments, and reviews the literature on TTA.
July 2018 in “Elsevier eBooks” This chapter reviews traction alopecia, discusses its clinical presentation and severity grading, and reports no new clinical results; the authors highlight controversies in its treatment and prevention strategies.
43 citations
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September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
June 2024 in “Journal of the Mississippi State Medical Association” August 2025 in “BMC Pharmacology and Toxicology” The LTF gene may help predict and manage nonspecific orbital inflammation.
35 citations
,
September 2003 in “Archives of dermatology” This study proposed that the tiger tail phenomenon in trichothiodystrophy hair is caused by regular undulations of hair fibers, altering the optical properties seen under polarized light.
8 citations
,
July 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that the tensile strength of curly hair is influenced by two main components, with springiness (toe region) contributing significantly, unlike in noncurly hair where it is negligible.
2 citations
,
January 1992 in “Neurologia medico-chirurgica” This study describes a new radiation method called three-dimensional moving field radiation therapy, which showed improved tumor targeting and reduced damage to surrounding tissues compared to traditional one-plane methods.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, exosome-like nanoparticles derived from rose stem cell culture were found to enhance skin quality by increasing collagen production, reducing melanin and inflammation, and promoting cell migration in vitro, suggesting potential aesthetic applications.
2 citations
,
January 2020 in “Skin appendage disorders” This article discusses traction alopecia in children and adolescents, emphasizing its occurrence due to hairstyles that exert chronic tension on hair, but reports no new findings.
60 citations
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April 2018 in “Clinical, cosmetic and investigational dermatology” This review discusses the causes and diagnosis of traction alopecia, emphasizing education for high-risk populations as there is currently no cure, and presents no new clinical findings.