146 citations
,
January 2004 in “Hormones” Human skin acts like a hormone-producing organ, making and managing various hormones important for skin and hair health.
September 2017 in “Journal of Investigative Dermatology” The research concluded that hyaluronic acid affects the formation and growth of hair follicle-like structures in a lab setting.
October 2022 in “The Egyptian Journal of Hospital Medicine” Females with idiopathic hirsutism have higher levels of omentin-1, which may lead to excessive hair growth.
April 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Sweat gland development involves two unique skin cell programs and a temporary skin environment.
82 citations
,
January 2000 in “Hormone Research in Paediatrics” DHEA stimulates skin oil glands and could help postmenopausal women, with potential for acne and excessive hair growth treatments.
20 citations
,
September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.
22 citations
,
June 2008 in “Experimental Dermatology” Heparanase is essential for hair follicle health and inner root sheath differentiation.
January 2019 in “Journal of Entomology and Zoology Studies” Ruminant goats have larger and more defined hair follicles than younger goats.
40 citations
,
June 2011 in “Journal of biological chemistry/The Journal of biological chemistry” FA2H is essential for normal fur and sebum production in mice.
27 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” December 2025 in “Skin Appendage Disorders” Scalp apocrine glands may help remove waste and balance electrolytes, but their role is not fully understood.
6 citations
,
April 2012 in “Journal of Oral Pathology and Medicine” Rushton's hyaline bodies form from hair keratin and blood substances.
108 citations
,
October 2003 in “Journal of biological chemistry/The Journal of biological chemistry” Trichohyalin makes hair follicles stronger.
173 citations
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July 1995 in “Biochemical and biophysical research communications” Male hormones promote hair cell growth by using a growth factor from nearby skin cells.
7 citations
,
January 1971 in “Archives of Dermatological Research”
February 2023 in “Mağallaẗ Tikrīt li-l-ʻulūm al-ṣirfaẗ/Tikrit journal of pure science” Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.
137 citations
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September 2005 in “Proceedings of the National Academy of Sciences of the United States of America” The HR protein helps hair grow by blocking a hair growth inhibitor, aiding in hair follicle regeneration.
January 2001 in “Biomedical Research” THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.
135 citations
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October 1997 in “Journal of biological chemistry/The Journal of biological chemistry” Trichohyalin is modified by enzymes to form strong structures in hair cells.
28 citations
,
August 2003 in “Steroids” Hirsute women have lower type 2 17β-HSD enzyme levels, which improve with treatment.
1 citations
,
April 2008 in “Experimental Dermatology” Hidradenitis suppurativa may mainly affect vellus hair follicles, not terminal ones.
1 citations
,
February 1991 in “Journal of Biological Chemistry” April 2019 in “Journal of the Endocrine Society” Androgens and estrogens are crucial for insulin secretion in males.
7 citations
,
January 1995 in “The Indian Journal of Animal Sciences” The Indian buffalo teat has a melanin-rich epidermis, no hair follicles, and a complex structure with muscle, blood vessels, and immune cells.
43 citations
,
April 2010 in “Developmental Biology” Sebaceous glands can form new hair follicles when activated, but hair follicle bulges cannot.
54 citations
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November 1994 in “Differentiation” Trichohyalin is found in non-hair tissues and works with filaggrin in certain skin areas and conditions.
56 citations
,
September 2013 in “Experimental Dermatology” The guide explains how to study human and mouse sebaceous glands using various staining and imaging techniques, and emphasizes the need for standardized assessment methods.
January 2005 in “中华医学杂志:英文版” Scar tissue may regenerate sweat glands from remaining glands or stem cells.
97 citations
,
March 2009 in “Dermato-endocrinology” Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.
4 citations
,
January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.