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July 2005 in “Journal of Chromatography B” A new method accurately measures hair lipids, revealing individual differences.
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January 1985 in “Acta Obstetricia Et Gynecologica Scandinavica” Hirsutism severity is linked to androgen levels, especially in women with a lower LH/FSH ratio.
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August 2014 in “PeerJ” Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.
January 2017 in “Durham e-Theses (Durham University)” Chemical stressors damage hair structure but the skin's outer layer protects living cells.
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November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.
June 2025 in “Samarra Journal of Pure and Applied Science” A new method accurately measures minoxidil in tablets.
January 2017 in “대한본초학회지(본초분과학회지)” Sinseon-yukza-hwan shows strong antioxidant potential for hair and scalp cosmetics.
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April 2009 in “Mycoses” Microsporum gypseum fungus breaks down keratin in hair by digesting it enzymatically, starting with less keratinized parts.
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September 2000 in “Journal of Dermatological Science” Fatty acid composition in human skin, mouth, and hair cells varies with keratinization, and cultured cells show essential fatty acid deficiency.
January 2020 in “International journal of scientific and research publications” Lower SOD enzyme levels are linked to more severe hair loss in men.
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March 1987 in “Journal of the American Academy of Dermatology” High DHEA-S levels may cause hair loss in young men.
January 1986 in “Journal of Steroid Biochemistry” Women with severe acne, hirsutism, and androgenic alopecia often have higher levels of certain androgens, but the specific pattern can't be predicted just by looking at symptoms.
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February 2009 in “Journal of Investigative Dermatology” Lipase H is important for hair follicle function and shaping hair fibers.
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December 2022 in “Journal of Materials Chemistry B” The dressing generates hydrogen sulfide to help heal wounds faster by reducing inflammation and promoting cell growth.
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January 1989 in “Archives of Dermatological Research” The side gland of Suncus murinus is a good model for studying human sebaceous glands.
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September 1998 in “Journal of Investigative Dermatology” The enzyme 17β-HSD type 2 mainly performs oxidation in human sebaceous glands, which may help protect against acne.
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January 1983 in “PubMed” Human skin releases different steroids, with some coming from sebaceous glands and others from sweat glands.
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September 2004 in “Biomacromolecules” The Glu413Lys mutation in keratin affects hair stability, while Glu413Asp does not.
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September 2018 in “International journal of genomics” Genetic mutations that disrupt homocysteine breakdown lead to increased damage in mouse hair keratin.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Certain proteins are significantly increased in the skin of people with hidradenitis suppurativa.
Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
February 2025 in “East African Scholars Journal of Medical Sciences” Higher testosterone and DHEA-S levels may be linked to male pattern baldness.
December 2010 in “OhioLink ETD Center (Ohio Library and Information Network)” Sry may regulate fatty acid metabolism and shows different expression levels in rat tissues.
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August 1937 in “Journal of the Society of Chemical Industry”
November 2024 in “Frontiers in Endocrinology” Hair analysis can help diagnose adrenal disorders non-invasively.
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September 2018 in “ACS applied bio materials” Calcium fatty acid deposits found in human hair can change its appearance and feel.
A new method can quickly and accurately detect illegal chemicals in hair loss products.
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March 2015 in “Clinical Endocrinology” A new method accurately measures long-term steroid levels in human hair.
April 2012 in “KSBB Journal” Minoxidil analogs can be improved for hair growth inhibition by modifying specific parts of their structure.
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January 1987 in “Journal of Society of Cosmetic Chemists of Japan” The method accurately measures hair damage and strength, revealing effects of cosmetics and metal correlations.