December 2025 in “Russian Journal of Skin and Venereal Diseases” Thinner hair follicle structures are linked to non-scar alopecia.
March 2009 in “Chinese Journal of Dermatology” Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.
July 2018 in “Elsevier eBooks” Lichen Planopilaris is a hair loss condition best treated early with various medications, including hydroxychloroquine, to prevent permanent baldness.
17 citations
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July 1984 in “British journal of dermatology/British journal of dermatology, Supplement” The four patients have a unique type of ichthyosis affecting hair follicles.
April 2026 in “npj Regenerative Medicine” Melanocyte stem cells in hair follicles are key to understanding and potentially preventing hair graying.
20 citations
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April 1959 in “A M A Archives of Dermatology” Alopecia mucinosa causes red, raised skin patches and hair loss.
71 citations
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October 2017 in “Journal of Investigative Dermatology” PPAR-γ agonists like pioglitazone may help manage lichen planopilaris but don't fully reverse scarring.
41 citations
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July 1994 in “Journal of Dermatological Science” Hair follicle cells need complex interactions to fully differentiate.
33 citations
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March 2013 in “Journal of Investigative Dermatology” Human hair follicle stem cells show signs of low oxygen levels, which may be important for hair growth and preventing baldness.
November 2018 in “Skin appendage disorders” The document concludes that a woman has both Frontal Fibrosing Alopecia and Lichen Simplex Chronicus, a previously unreported combination of conditions.
January 2011 in “한국미용학회지” Fructus Ligustri Lucidi water extract may help hair growth by promoting cell survival.
25 citations
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October 2007 in “Developmental biology” Clim proteins are essential for maintaining healthy corneas and hair follicles.
February 2019 in “American International Journal of Humanities Arts and Social Sciences” The dermis of Millivora Capenesis has two layers with various connective tissues, blood vessels, glands, and sensory structures.
October 2021 in “European journal of cancer” Repeated biopsies are crucial for managing lupus panniculitis when initial treatments fail.
September 2018 in “CRC Press eBooks” Hair and nail disorders can cause changes in scalp pigmentation, especially with sun exposure and alopecia.
13 citations
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November 1985 in “International Journal of Dermatology” The study found clear differences in lesion distribution and microscopic features among trichostasis spinulosa, keratosis pilaris, and eruptive vellus hair cysts.
April 2013 in “Cancer Research” SKH1 hairless mice have identifiable epidermal stem cells with specific markers.
2 citations
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January 2011 in “Dermatologica Sinica” Taiwan reported its first case of a rare scalp condition with no clear cause or treatment.
14 citations
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May 1979 in “International Journal of Dermatology” Trichostasis spinulosa mainly affects the nose, with many tiny hairs in one follicle, possibly influenced by hormones and sunlight.
December 2005 in “Journal of the American Academy of Physician Assistants” The woman was diagnosed with lichen planopilaris and can be treated with corticosteroids.
66 citations
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December 2013 in “Nature Cell Biology” Inactive hair follicle stem cells help prevent skin cancer.
277 citations
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July 2011 in “Journal of the Dermatology Nurses’ Association” The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.
185 citations
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June 2011 in “Molecular and cellular endocrinology” Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.
182 citations
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December 2007 in “BJCP. British journal of clinical pharmacology/British journal of clinical pharmacology” Hair follicles significantly increase the speed and amount of caffeine absorbed through the skin.
162 citations
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August 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” The new "differential stripping" method effectively measures how much substance gets into hair follicles.
158 citations
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August 2011 in “Reviews in endocrine and metabolic disorders” Vitamin D and its receptor regulate skin functions like cell growth, immunity, hair cycle, and tumor prevention.
141 citations
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November 2005 in “International journal of pharmaceutics” Hair follicles may soon be used more for targeted and systemic drug delivery.
140 citations
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December 2017 in “Journal of Controlled Release” Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.
140 citations
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January 2009 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Liposomes improve drug delivery and reduce skin irritation in dermatology.
131 citations
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May 2015 in “Experimental Dermatology” Microneedles help improve skin appearance and deliver skin treatments effectively, but safety concerns need more research and regulation.