September 2017 in “Journal of Investigative Dermatology” Certain products and treatments can improve hair health and growth.
August 2022 in “Indonesian Journal of Medical Chemistry and Bioinformatics” Certain herbal compounds might help prevent hair loss in menopausal women by activating Vitamin D receptors.
Haircare products may expose users to harmful chemicals despite regulations.
3 citations
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December 2000 in “International Journal of Cosmetic Science” The study created a new method to test drugs that affect hormone processing in skin.
26 citations
,
November 2005 in “Journal of Investigative Dermatology Symposium Proceedings” TrichoScan effectively measures hair growth improvements in people using minoxidil.
Women with androgenetic alopecia have normal levels of most blood steroids and binding proteins, but higher dehydroepiandrosterone. Some also have low "sex hormone-binding globulin" and "corticosteroide-binding globulin" capacity, and high "free androgen index" and "free cortisol index". Diane treatment can normalize these levels and improve hair conditions.
1 citations
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January 1993 in “Skin Pharmacology and Physiology” Hair growth drugs and epidermal growth factor do not change the calcium binding site gradient in hair follicles.
72 citations
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February 1990 in “British Journal of Clinical Pharmacology” Hair analysis can track haloperidol dosage history.
February 2025 in “East African Scholars Journal of Medical Sciences” Higher testosterone and DHEA-S levels may be linked to male pattern baldness.
Hair cortisol levels can effectively indicate long-term hormone activity.
199 citations
,
July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
14 citations
,
February 1982 in “American Journal of Clinical Nutrition” Hair pluckability can help assess protein nutrition status.
31 citations
,
December 2016 in “Anais Brasileiros de Dermatologia” DHEA reduction may be linked to frontal fibrosing alopecia, but more research is needed.
5 citations
,
August 2011 in “Journal of Dermatological Science” Dentin sialoprotein and phosphophoryn are present in rodent hair follicles and may help hair growth and development.
1 citations
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April 2015 in “Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)” Skin and hair aging involves mitochondrial issues, telomere shortening, and hormonal changes, with iron affecting hair loss in pre-menopausal women.
October 2023 in “Al-Anbar medical journal” The clinic-based hair fall count method is accurate and reliable.
4 citations
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November 2004 in “Clinical and Experimental Dermatology” Hair length and thickness are related, with thickness peaking at about a quarter of the hair's maximum length.
23 citations
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May 2005 in “British Journal of Cancer” Plucked human hair can be used to study drug effects on certain cell markers.
April 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Hair cortisol is a reliable long-term stress marker during pregnancy.
HEM-13HDC, a mix of 8 herbal extracts, helps hair grow and affects hair growth at a molecular level.
June 2006 in “British Journal of Dermatology” Lower adrenal hormone levels may cause hair loss in postmenopausal women, certain patterns help diagnose nail cancer, and a gene variant linked to higher skin cancer risk in kidney transplant patients suggests monitoring folate levels.
2 citations
,
January 1972 Hair can measure exposure to radioisotopes.
36 citations
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December 2016 in “Journal of The American Academy of Dermatology” The normal range for the hair pull test is 2 hairs or fewer, and washing or brushing hair before the test does not affect the results.
March 2005 in “International Journal of Cosmetic Science” DVI provides detailed 3D imaging of hair and shows how various products protect and enhance hair.
132 citations
,
August 2008 in “Development” Dlx3 is essential for hair growth and regeneration.
168 citations
,
January 2005 in “Journal of Investigative Dermatology” Male and female mice have different skin thickness, and hormones affect their skin and hair growth differently.
November 2025 in “Clinical Cosmetic and Investigational Dermatology” Digital microscopy can help diagnose hirsutism by measuring hair growth.
10 citations
,
December 2017 in “Physiological Reports” Hair follicle analysis can track body changes from high-intensity interval training.
15 citations
,
January 1971 in “British Journal of Dermatology” Hair can indicate early signs of metabolic disorders, with issues like protein deficiency stopping hair growth.
11 citations
,
September 2020 in “Steroids” A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.