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    Glossary Anagen Hair Ratio

    proportion of hair follicles in the active growth phase

    The Anagen Hair Ratio refers to the proportion of hair follicles that are in the anagen phase, which is the active growth phase of the hair cycle. A higher anagen hair ratio indicates a greater number of hair follicles are actively growing, which is typically a sign of healthy hair growth. This ratio is often used by dermatologists and trichologists to assess hair health and diagnose conditions like alopecia.

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    1. A 2% Oleosome-FGF-2 Fusion Extract Scalp Serum Improves Photo-trichogramDerived Hair Density, Anagen/Telogen Ratio, Hair Shaft Thickness, and Scalp Barrier Parameters in Women with Shedding-Prone Hair: A Randomized, SingleBlind, Placebo-Controlled Pilot Study International Journal of Clinical & Experimental Dermatology · 2026
    2. Effects of platelet-rich plasma application on hair follicle count, telogen/anagen ratio, and miniaturized hair ratio in patients with androgenic alopecia: alone or in combination with other treatments Journal of Dermatological Treatment · 2025
    3. Comparison of Hair Follicle Density and Anagen:Telogen Ratio between Topical Minoxidil Alone and Its Combination with Platelet-Rich Plasma Exosomes in a Mice Model of Androgenetic Alopecia Malaysian Journal of Medicine and Health Sciences · 2026
    4. Promotion of anagen, increased hair density and reduction of hair fall in a clinical setting following identification of FGF5-inhibiting compounds via a novel 2-stage process Clinical, Cosmetic and Investigational Dermatology · 2017 · 27 citations
    5. Finasteride increases anagen hair in men with androgenetic alopecia British Journal of Dermatology · 2000 · 129 citations
    6. LB1010 Ashwagandha-derived exosome-like nanoparticles significantly promote human hair growth ex vivo and in vivo by stimulating the production of the anagen promoting growth factor VEGF-A Journal of Investigative Dermatology · 2024
    7. Effect of mycophenolic acid on proliferation of dermal papilla cells and induction of anagen hair follicles Clinical and experimental dermatology · 2015 · 16 citations
    8. Amaranthus Extract Promotes Healthy Follicles and Anagen Hair Density-A Randomized Placebo-Controlled, Double-Blinded Study. PubMed · 2025
    9. A Novel, Drinkable Food Supplement Formulation Reduces Hair Shedding and Increases the Percentage of Anagen Scalp Hair Follicles in Females with Hair Loss Journal of Clinical Medicine · 2025
    10. Characteristic features of Japanese women's hair with aging and with progressing hair loss Journal of Dermatological Science · 2006 · 76 citations
    11. Quantification of female pattern hair loss: a study in a Turkish population. PubMed · 2007 · 7 citations
    12. Evaluation of biophysical skin parameters and hair changes in patients with acne vulgaris treated with isotretinoin, and the effect of biotin use on these parameters International Journal of Dermatology · 2021 · 5 citations
    13. ISID1417 - Interest of a cinchona succirubra extract and its association with caffeine in hair loss 2023
    14. Interest of an anti–hair loss shampoo supplement used alone and in association with the reference treatment in the management of hair loss Journal of the American Academy of Dermatology · 2019
    15. Evaluation of Hair Growth Promoting Activity of Sansevieria Trifasciata P. on Alopecia Androgenic Rabbit Male International journal of pharmaceutical research · 2021
    16. Growth and viability of Liaoning Cashmere goat hair follicles during the annual hair follicle cycle Genetics and Molecular Research · 2014 · 10 citations
    17. A Review: Herbal Hair Growth Tonic International Journal for Research in Applied Science and Engineering Technology · 2025
    18. Hair diameter diversity: a clinical sign reflecting the follicle miniaturization. PubMed · 2001 · 41 citations
    19. Lonely Hair Sign: Not Specific for Frontal Fibrosing Alopecia Archives of Dermatology · 2012 · 4 citations
    20. The hair root pattern after calcipotriol treatment for scalp psoriasis. Acta Dermato Venereologica · 1995 · 8 citations
    21. Is TrichoScan a new diagnostic method for diffuse hair loss? Turkish Journal of Medical Sciences · 2014 · 2 citations
    22. Targeted Follicular Delivery via Liposomal Encapsulation of Sesbania grandiflora - Enhances Hair and Scalp Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study Clinical Cosmetic and Investigational Dermatology · 2026
    23. Evaluation of a Combination of Cystine, B Vitamins and Minerals, in the Management of Diffuse Hair Loss in Women: A Prospective, Open-Label Study Preprints.org · 2026
    24. TrichoScan: A Novel Tool For The Analysis of Hair Growth In Vivo Journal of Investigative Dermatology Symposium Proceedings · 2003 · 70 citations
    25. The Hair Growth-Promoting Effect of<i>Rumex japonicus</i>Houtt. Extract Evidence-based Complementary and Alternative Medicine · 2016 · 8 citations
    26. A 6-Month Prospective, Open-Label, Randomized Study Showing Increased Hair Growth Rate in Women Using Multi-Targeting Hair Growth Nutraceuticals Dermatology and Therapy · 2026
    27. Pathogenetic Rationale for the Use of Exosomes Derived from Salmon Tissue in Patients with Androgenetic Alopecia: A Prospective Uncontrolled Observational Study Russian Journal of Skin and Venereal Diseases · 2026
    28. Prospective Efficacy and Safety Study of an Innovative Kerascalp Hair Growth Serum in Mild-to-Moderate Alopecia in India: Regrowth Study Cureus · 2023
    29. Evaluation of hair growth promoting activity of Phyllanthus niruri. PubMed · 2015 · 8 citations
    30. A comparative in vivo and in vitro evaluation of hair growth potential of extracts and an isolate from petroleum ether extract of Cuscuta reflexa Roxb Beni-Suef University Journal of Basic and Applied Sciences · 2014 · 7 citations