September 2024 in “Skin Research and Technology” This study used atomic force microscopy to identify significant morphological differences in hair from patients with lichen planopilaris compared to healthy controls, noting more scratches, uneven edges, and pitted scales in affected hair, which may aid future research on the condition.
February 2024 in “Medicina” In this study, researchers used atomic force microscopy to capture and analyze morphological changes in the surface of healthy hair, identifying features such as pitting and rod-shaped macro-fibrillar elements, which could inform future research on hair conditions and care.
In this study, a polyphenol and biotin supplement improved skin roughness and significantly reduced hair shedding, but did not demonstrate clear superiority over placebo in overall skin outcomes.
April 2023 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” This study compared the effects of direct heat perms and softening heat perms on hair, analyzing damage and morphological changes to understand their impact on hair fibers and provide foundational data for future research.
January 2005 in “Chinese Journal of Veterinary” This study observed that hairless mice of different strains initially grow hair but soon develop alopecia and other skin and pigmentation changes with age.
January 2013 in “Wool textile journal” 10 citations
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January 2020 in “Royal Society Open Science” This study developed a quantitative measure for scoring hair surface damage from SEM images and found it accurately classified hair damage caused by explosive blasts, similar to an existing classification system.
September 2024 in “Heliyon” In this study, researchers observed that even a single session of hair dyeing can damage hair fibers, with significant worsening of mechanical properties and protein composition after three or more consecutive treatments, emphasizing the need to consider the cumulative impacts of dyeing on hair health.
1 citations
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November 2003 in “Humana Press eBooks” This article discusses the use of atomic force microscopy for examining human hair surfaces in dermatology, cosmetics, and forensic science, but presents no new research findings.
2 citations
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February 2016 in “Journal of sol-gel science and technology” This study found that 3-aminopropyltriethoxysilane penetrates hair fibers and improves the mechanical resistance of dry hair, addressing the needs for increased body in fine hair.
1 citations
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January 1988 This study found that hair treatments applied after chlorination, especially bleaching and dyeing, more significantly altered surface properties and weight loss, while perming most strongly affected tensile properties.
September 2026 in “AlQalam Journal of Medical and Applied Sciences” This study found that a combination of Ziziphus lotus, Linum usitatissimum, and Opuntia ficus-indica extracts may reduce porosity and improve surface condition in bleached hair when used as a conditioner.
December 2025 in “Applied Sciences” This study examined argan oil inclusion complexes with β-CD, finding that these complexes improve the antibacterial efficacy, uniformity, and mechanical performance of hair treatment formulations while enhancing the durability of bleached hair, suggesting their potential as stable and effective cosmetic ingredients.
August 2024 in “Cosmetics” In this study, a bleaching protocol was developed to evaluate hair repair products, revealing that K18® and Olaplex® improve hair brightness and lightness, with distinct impacts on hair fiber properties.
January 2006 in “东华大学学报:英文版” This study found that treating yak hair fibers with low-temperature plasma and microwaves weakened the scale structure and significantly improved dyeability.
October 2025 in “International Journal of Cosmetic Science” This study observed that hair properties vary by ethnicity, influenced by genetic, environmental, and cultural factors, and noted that ethnicity-dependent differences in surface charge and other properties warrant further investigation.
January 2001 in “China Surfactant Detergent & Cosmetics” This study compared the protective effects of two conditioners, Protective factor C and Keratin, on hair damaged by perm treatment using a model of damaged hair.
175 citations
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January 1995 in “Birkhäuser Basel eBooks” This review examines the histochemistry and keratinization processes of human hair, exploring the structural roles of keratin proteins, protein chains, and lipids, but offers no new results.
January 2003 in “Research Portal (King's College London)” This study employed a laser-based method to analyze how light reflection patterns vary on human hair fibers, revealing changes related to hair color and the tilt of the cuticle cells.
April 2017 in “The Journal of urology/The journal of urology” This study found that Sonic Hedgehog protein treatment enhanced the sprouting and regeneration of pelvic ganglia and cavernous nerves after injury, with localization of delivery affecting outcomes.
April 2017 in “The Journal of urology/The journal of urology” This study observed that both dutasteride and finasteride affected penile morphology in normotensive and hypertensive rats, with more pronounced changes in hypertensive animals, especially when treated with dutasteride.
This study found that while there are some ethnic differences in skin and hair follicle characteristics, these differences are unlikely to significantly affect the penetration of topical substances, suggesting other factors such as cultural habits may also play a role.
January 2003 in “Linchuang pifuke zazhi” This study used atomic force microscopy to image surface structures of human epidermal melanocytes, hair follicle amelanotic melanocytes, and mouse melanoma cells, revealing differences in branch structure and granule distribution.
15 citations
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October 2018 in “Reproductive Biomedicine Online” This study suggests that the anogenital distance measure AGDAC may moderately discriminate the presence of polycystic ovarian syndrome and could be a useful clinical tool.
95 citations
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July 2007 in “Journal of Experimental Botany” This study found that the superior growth and higher zinc uptake of wild-type barley compared to its root-hairless mutant in zinc-deficient soil is mainly due to greater root surface area from root hairs.
6 citations
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January 2015 in “Biochemical Society Transactions” This review discusses the role of Ysc84/SH3yl1 proteins in linking actin regulation to membrane morphology changes but reports no new experimental results.
1 citations
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September 2019 in “Journal of surgery and medicine” This study found that women with polycystic ovary syndrome had worse meibomian gland morphology and ocular surface conditions compared to healthy controls, as observed through non-contact meibography.
November 2024 in “Journal of Microscopy” This study found that micro-computed tomography (micro-CT) was highly effective for analyzing the cross-sectional geometry of hair fibres, including the medulla in highly curled hair, but less effective than scanning electron microscopy for surface details.
25 citations
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March 2002 in “Scanning” This study highlights confocal microscopy as a promising, minimally invasive tool for assessing hair morphology and internal structures, making it valuable for cosmetic hair assessments.
21 citations
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December 2011 in “Chungara” This study shows that environmental contamination affects mummy hair, suggesting that using it to assess ancient people's health or nutrition should be approached cautiously.