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    Did you mean Follicular Infundibulum?
    Glossary Follicular Infundibulum

    upper part of hair follicle where sebum exits

    The follicular infundibulum is the upper part of a hair follicle, extending from the skin's surface down to the point where the sebaceous (oil) gland opens into the follicle. This region is crucial for the passage of sebum and dead skin cells to the skin's surface, and its blockage can lead to conditions like acne.

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    1. Reflectance confocal microscopy can differentiate dermoscopic white dots of the scalp between sweat gland ducts or follicular infundibulum British Journal of Dermatology · 2011 · 20 citations
    2. Pilomatricoma can differentiate not only towards hair matrix and hair cortex, but also follicular infundibulum, outer root sheath and hair bulge Experimental Dermatology · 2009 · 18 citations
    3. Microneedling dilates the follicular infundibulum and increases transfollicular absorption of liposomal sepia melanin Clinical, Cosmetic and Investigational Dermatology · 2015 · 25 citations
    4. Tumors of the follicular infundibulum 2019
    5. The changes in the expression levels of follicular markers in keratoacanthoma depend on the stage: keratoacanthoma is a follicular neoplasm exhibiting infundibular/isthmic differentiation without expression of CK15 Journal of Cutaneous Pathology · 2014 · 28 citations
    6. Dermoscopic features of infundibular keratinising acanthomas and follicular cysts: Description, assessment and histopathological correlation Veterinary Dermatology · 2025
    7. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in a Labrador retriever: Clinical, histopathological and dermoscopic features and co‐morbidities Veterinary Dermatology · 2024
    8. Ex-vivo measurement of scalp follicular infundibulum delivery of zinc pyrithione and climbazole from an anti-dandruff shampoo Journal of pharmaceutical and biomedical analysis · 2017 · 12 citations
    9. New insights on dandruff/seborrhoeic dermatitis: the role of the scalp follicular infundibulum in effective treatment strategies 2011 · 46 citations
    10. Hypopigmented facial lesions: a case of eruptive tumor of follicular infundibulum International Journal of Dermatology · 2025
    11. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in four Labrador retrievers: preliminary description and response to therapy Veterinary dermatology · 2013 · 10 citations
    12. Recurrent inverse necrotizing infundibular crystalline folliculitis Journal of Cutaneous Pathology · 2024 · 1 citations
    13. Clinicopathologic and trichoscopic features of keratosis follicularis spinulosa decalvans: A case series study Journal of dermatology · 2023
    14. ‘Follicular Swiss cheese’ pattern - another histopathologic clue to alopecia areata Journal of Cutaneous Pathology · 2010 · 35 citations
    15. ‘Follicular Swiss cheese’ pattern–another histopathologic clue to alopecia areata Yearbook of Dermatology and Dermatologic Surgery · 2012
    16. Immunohistochemical Study of Calretinin in Normal Hair Follicles and Tumors With Follicular Differentiation Actas Dermo-Sifiliográficas · 2008 · 15 citations
    17. Follicular and perforating disorders Journal of cutaneous pathology · 1985 · 11 citations
    18. Preliminary findings suggest hidradenitis suppurativa may be due to defective follicular support British Journal of Dermatology · 2013 · 6 citations
    19. Perifollicular inflammation and follicular spongiosis in androgenetic alopecia Journal of The American Academy of Dermatology · 2021 · 1 citations
    20. Histopathologic Criteria for Follicular Differentiation 2017 · 1 citations
    21. Other Questions on Basaloid Follicular Hamartoma Archives of Dermatology · 1994 · 8 citations
    22. A case of localized follicular hamartoma: an ultrastructural and immunohistochemical study Journal of Cutaneous Pathology · 2000 · 21 citations
    23. Facial Follicular Spicules: A Rare Cutaneous Presentation of Trichodysplasia Spinulosa Cutis · 2022
    24. Lipid analysis of follicular casts from cyanoacrylate strips as a new method for studying therapeutic effects of antiacne agents 2001 · 88 citations
    25. Increasing the percutaneous absorption and follicular penetration of retinal by topical application of proretinal nanoparticles European journal of pharmaceutics and biopharmaceutics · 2019 · 14 citations
    26. Differential Stripping: Determination of the Amount of Topically Applied Substances Penetrated into the Hair Follicles 2005 · 162 citations
    27. Comparison of stratum corneum penetration and localization of a lipophilic model drug applied in an o/w microemulsion and an amphiphilic cream European journal of pharmaceutics and biopharmaceutics · 2007 · 132 citations
    28. Yellow dots in trichoscopy: relevance, clinical significance and peculiarities Anais Brasileiros de Dermatologia · 2017 · 13 citations
    29. The application of local hypobaric pressure — A novel means to enhance macromolecule entry into the skin Journal of Controlled Release · 2016 · 9 citations
    30. Trichoscopy I: Non-Cicatricial Alopecia CRC Press eBooks · 2021