October 2025 in “Dermatology and Therapy” This study observed that adults with thinning hair who ingested a patented botanical-based supplement experienced significant increases in hair shaft diameter and reductions in hair breakage over 180 days, suggesting improved hair strength and length across various demographic groups.
August 2007 in “Microscopy and Microanalysis” Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.
7 citations
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September 2020 in “International Journal of Cosmetic Science” This study investigated the effects of wool-derived hydrolysed keratin peptides on relaxed textured hair and found that mid- and high-molecular weight peptides improved mechanical strength and reduced breakage in different humidity conditions.
2 citations
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September 2008 in “International Journal of Cosmetic Science” This study found that brushing hair increases the ratio of long-to-short segment breaks compared to combing, with factors like bleaching and wet combing contributing to more long segment breaks.
September 2025 in “International Journal of Cosmetic Science” This study found that for straight hair, friction mainly influences fragment formation during combing, suggesting no direct connection to tensile fatigue failure, while with textured hair, combing performance may be more complex.
4 citations
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February 2020 in “Journal of Cosmetic Dermatology” This study reported significant moderate-to-severe complications in two patients following synthetic hair fiber implantation, including recurrent infections, scalp issues, and granulomatous reactions, which were only resolved once the fibers were removed despite initial treatment attempts with antibiotics.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The abstract for Roota Hair Growth describes a product combining botanical extracts with clinically-tested ingredients to target hair thinning, breakage, and scalp fatigue by blocking DHT, strengthening hair fibers, and revitalizing the scalp through a precision roll-on applicator, offering a natural alternative for healthier hair.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The investigators highlighted Roota Hair Growth as a promising botanical solution for hair concerns, suggesting it may improve hair health by addressing the root causes of thinning, breakage, and scalp fatigue.
November 2025 in “Repositorio Comunidad Politecnico Grancolombiano” This research focuses on Milagros's strategy to internationalize by exporting their intensive repair hair mask to Mexico, France, and the United States, examining each market's potential and challenges in the global hair care sector.
15 citations
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January 1998 This study found that repeated cycles of wetting and blow-drying hair fibers can cause cracks in the hair cuticles, particularly among individuals who frequently blow-dry their hair.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” This source describes SwaLife Hair Bloom Onion Oil as a treatment that uses onion extract and herbs to strengthen hair, prevent breakage, and promote growth, while offering a relaxing, traditional head massage experience.
1 citations
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April 2022 in “Journal of Biological Regulators and Homeostatic Agents/Journal of Biological Regulators & Homeostatic Agents” This study reported that among 1337 patients receiving biocompatible artificial hair implants, common side effects included mild inflammation (7%) and itching (<3%), while patient satisfaction was high at 96%, though COVID-19 may have impacted some results.
January 1991 in “Acta Dermato Venereologica” This article describes a new method for staining hair fibers that visualizes keratin filaments without the need for OsO4 fixation or sulfur bond breakage, but it provides no new experimental results beyond the method itself.
1 citations
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February 2015 in “Zenodo (CERN European Organization for Nuclear Research)” This study tested five different brands of hair building fibers, examining their electrostatic and dielectric properties as well as analyzing their fiber structure with scanning electron microscopy.
January 2026 in “Journal of Cosmetic Dermatology” This study observed that repeated low-depth microneedling in patients with androgenetic alopecia led to initial hair improvement but subsequently caused hair-shaft fragility and breakage, suggesting iatrogenic damage.
April 2019 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” This study found that the acidic hair straightening formulation at pH 1.0 improved hair alignments and straightening effectiveness more than pH 2.0, but it weakened fiber strength and affected hair color and composition.
13 citations
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January 2017 in “Cosmetics” This review discusses in vitro methods for evaluating the effects of hair care products on hair fibers, reporting no new results; the authors emphasize the importance of selecting appropriate and accurate equipment for testing.
January 2020 in “Indian dermatology online journal” Hair styling products can damage hair over time.
15 citations
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January 2012 in “International journal of trichology” This study found that the HairCheck® device, demonstrating high correlation between its Hair Mass Index and hair characteristics such as strand number and diameter, may be an effective tool for assessing hair mass changes in alopecia patients.
3 citations
,
January 2002 in “Springer eBooks” This study found that using cationic and non-ionic polymers during alkaline hair relaxer treatments may help strengthen hair and control swelling, potentially reducing damage.
January 2017 in “프로그램북(구 초록집)” This report describes a case of acquired trichorrhexis nodosa in a woman with severe iron deficiency anemia, highlighting a possible link between the two conditions.
36 citations
,
July 1996 in “The journal of investigative dermatology/Journal of investigative dermatology” This research reports a new autosomal recessive mutation in mice, 'lanceolate hair', causing generalized alopecia and hair shaft abnormalities, which may serve as a model for Netherton's syndrome in humans.
January 2011 in “Junshi yixue” This study found that high-power millimeter wave exposure can cause skin injury in mice, with the severity of damage correlating to the duration of radiation.
2 citations
,
October 2007 in “PubMed” In this study, researchers observed that more hairs are extracted from the follicle with intact root bulbs than breakage occurring along the fiber in treated versus untreated hair.
2 citations
,
July 2012 in “PubMed” In this study, the use of internal wool lipid liposomes was shown to improve the lipid composition and increase the resistance to breaking in both untreated and chemically treated hair fibers.
43 citations
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September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
13 citations
,
November 2012 in “International Journal of Dermatology” This study of African-American women found that those perceiving greater hair breakage showed lower break stress and higher premature failure rates, linked to grooming practices and hair curvature.
10 citations
,
January 2007 in “Dermatologic Surgery” The study reported that using polyamide hair fiber implants may be an effective adjunctive treatment for scalp scars, with most patients experiencing no complications.
8 citations
,
November 2019 in “Journal of Natural Fibers” This study found that reinforcing clayey soil with human hair fibers increased its strength significantly, both before and after freeze-thaw cycles, suggesting its potential use in cold climate zones.
4 citations
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March 2021 in “Journal of Surfactants and Detergents” This study found that hair treated with shampoo containing water-soluble silicone demonstrated smoother sliding and better detangling, compared to shampoo with water-insoluble silicone, due to differences in conditioning film formation.