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    Glossary Hair Diameter

    width of an individual hair strand, measured in micrometers

    Hair Diameter, also known as hair shaft diameter or hair thickness, refers to the width of an individual strand of hair. It is typically measured in micrometers (µm) and can vary significantly among individuals and even among different hairs on the same person. This measurement is important for understanding hair texture, strength, and overall health, and it can influence how hair responds to styling and treatment products.

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    1. The Development and Application of the Hair Diameter Index (HDI) Hair transplant forum international · 2021 · 3 citations
    2. Investigation of oral finasteride enhanced occipital hair diameter index in different types of male androgenetic alopecia Journal of The American Academy of Dermatology · 2023
    3. Several variants on chromosome 10 are associated with coarse hair diameter in Dazu black goats (<i>Capra hircus</i>) Animal Genetics · 2025 · 3 citations
    4. PRECISE Scale: a quantitative classification for androgenetic alopecia and its application to hair transplantation Aesthetic Plastic Surgery · 2023
    5. A new classification of early female pattern hair loss International Journal of Trichology · 2018 · 3 citations
    6. Study of endocrinal profile and trichoscopic features in female pattern hair loss at tertiary care hospital International Journal of Research in Dermatology · 2022
    7. The Cross-section Trichometer: A New Device for Measuring Hair Quantity, Hair Loss, and Hair Growth Dermatologic Surgery · 2008 · 29 citations
    8. Shape Variability and Classification of Human Hair: A Worldwide Approach Human biology · 2007 · 95 citations
    9. Microanatomical Observations of Hair Characteristics of Red Fox (Vulpes vulpes), Golden Jackal (Canis aureus), and Gray Wolf (Canis lupus): A Comparative Study Pakistan journal of zoology · 2021 · 1 citations
    10. 15. Hair and Nails Medical & surgical dermatology · 2009
    11. Histomorphological and Quantitative Characteristics of Black and Gray Human Scalp Hair Journal of life sciences · 2010 · 5 citations
    12. The Cross-section Trichometer Dermatologic Surgery · 2008 · 2 citations
    13. Comparative efficacy of photodynamic therapy, autologous platelet-rich plasma therapy, and their combination in the treatment of diffuse telogen effluvium Russian Journal of Skin and Venereal Diseases · 2026
    14. Pigtail hair in acute telogen effluvium – Lest we forget! Indian Dermatology Online Journal · 2020 · 1 citations
    15. Hair breakage index: an alternative tool for damage assessment of human hair. PubMed · 2011 · 3 citations
    16. Rosmarinus officinalis Essential Oil Increases Hair Length and Follicle Diameter of Ultraviolet B-exposed Mice Through VEGF The Indonesian Biomedical Journal · 2023
    17. Reduction of Diameter of Hair Shaft among Women with Hirsutism Global journal of health science · 2011
    18. Reduction of Diameter of Hair Shaft among Women with Hirsutism Global journal of health science · 2011
    19. Cross-section Trichometry: A Clinical Tool for Assessing the Progression and Treatment Response of Alopecia International journal of trichology · 2012 · 15 citations
    20. Cross-section trichometry, a clinical tool for assessing the progression and treatment response of alopecia 2013
    21. Quantitative Studies on Human Hair Growth(II). Correlation between Subjective Grading and Objective Measurements of Hair Growth. Journal of S C C J · 1994 · 2 citations
    22. Topical application of cinnamon (cinnamomum burmanii) essential oil has the same effectiveness as minoxidil in increasing hair length and diameter size of hair follicles in male white Wistar rats (rattus norvegicus) 2018
    23. Organic Hair Transplantation: A New Concept in Hair Transplantation Plastic surgery and modern techniques · 2022
    24. Epidermal growth factor delays the development of the epidermis and hair follicles of mice during growth of the first coat The Anatomical Record · 1983 · 72 citations
    25. The Comparison of Trichoscopic Findings in Female Pattern Hair Loss (FPHL) and Chronic Telogen Effluvium (CTE) in Female Patients Journal of pharmaceutical research international · 2021
    26. ARTIFICIAL INTELLIGENCE-ASSISTED TRICHOSCOPY IN HAIR DISORDERS: CURRENT APPLICATIONS, CLINICAL UTILITY, AND FUTURE PERSPECTIVES International Journal of Innovative Technologies in Social Science · 2026
    27. Clinical and dermoscopic profile of female pattern hair loss Asian Journal of Medical Sciences · 2024
    28. Morphological changes in human scalp hair during treatment by hair products containing copper and zinc enriched yeast hydrosylate Himi, himijn tehnologijn hùrèèlèngijn èrdèm šinžilgèènij bùtèèl · 2022
    29. Clinicopathological, trichoscopic and biochemical parameters in females with patterned hair loss International Journal of Research in Dermatology · 2021
    30. Donor Hair Selection Methodology for A Natural Result in Capsule Extensions The American Journal of Interdisciplinary Innovations and Research · 2025