13 citations
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August 1995 in “Australasian Journal of Dermatology” Hair follicles are smaller in people with androgenetic alopecia compared to those with normal scalps.
6 citations
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May 2003 in “PubMed” Small amounts of DNA can be found in the hair shaft, especially near the root, but it decreases with hair treatments and washing.
4 citations
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May 2014 in “Daehan hanbang so'a'gwa haghoeji/Daehan hanbang soagwa hakoeji” Ganoderma lucidum extract and microneedle therapy can help treat hair loss.
4 citations
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March 1989 in “The BMJ” Naproxen is not the cause of hair loss in a child; it's due to a toxic event with expected hair regrowth.
3 citations
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August 2022 in “Molecules/Molecules online/Molecules annual” A new strain of bacteria from the human skin can help prevent hair loss.
2 citations
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November 2017 in “Histochemistry and Cell Biology” Polyamines are abundant in certain parts of rat hair follicles and may play a key role in hair growth.
1 citations
,
May 2024 in “PLoS ONE” Horse hair follicles can be stored at cool or room temperature for a week without losing RNA quality.
1 citations
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December 2023 Hair grows in cycles and changes with age, starting from fetal development.
November 2025 in “Journal of English Language and Education” Guava leaf extract hair tonic is safe, well-liked, and may help strengthen hair and scalp.
Curly hair may be caused by a muscle contraction, and muscle relaxants might help treat it.
July 2024 in “International Journal of Pharmacognosy and Life Science” An herbal hair serum with natural ingredients can help reduce hair loss and improve hair health.
November 2023 in “Journal of Investigative Dermatology” EGFR-targeted cancer therapy can cause skin issues starting at hair follicles, leading to inflammation.
April 2018 in “Journal of Investigative Dermatology” A new peptide, FOL-005, may help treat excessive hair growth by reducing a hair growth promoter, FGF7.
Certain chemicals and drugs can cause hair loss.
210 citations
,
February 2008 in “Nature genetics” Mutations in the P2RY5 gene cause autosomal recessive woolly hair.
78 citations
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May 2012 in “Journal of Investigative Dermatology” A specific gene mutation causes woolly hair and hair loss.
71 citations
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June 2005 in “Journal of Investigative Dermatology” PAD enzymes play a key role in hair growth and structure.
48 citations
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February 2010 in “Molecular biology reports” KAP7.1 and KAP8.2 genes are crucial for cashmere quality in goats.
36 citations
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August 2011 in “Journal of dermatological science” Human hair has a protective lipid layer that can be damaged by moisture and treatments, affecting hair growth and health.
31 citations
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August 2000 in “Journal of Investigative Dermatology” Stem cells are key for hair follicle recovery.
28 citations
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March 2019 in “Journal of Dermatological Science” The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.
12 citations
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June 2009 in “Journal of Cosmetic Dermatology” Loose Anagen Hair syndrome occurs in dark-skinned children and often improves on its own.
7 citations
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March 2005 in “Journal of dermatological science” Apoptosis helps shape hair growth and prepares the skin for hair to emerge.
December 2023 in “International Journal of Medical Arts” Transplanted hair follicles show significant changes after FUE, needing more research.
April 2023 in “Journal of Investigative Dermatology” Blocking casein kinase 1 in skin cells can help melanocyte precursors move better, potentially helping with conditions like vitiligo or gray hair.
June 2017 in “Journal of the American Academy of Dermatology” Plucked hair can help diagnose pemphigus vulgaris early.
April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” Combining UVB irradiation and anti-CD154 antibody improves hair follicle transplant survival.
March 2009 in “Chinese Journal of Dermatology” Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.
January 2007 in “Chinese journal of plastic surgery” Sodium fluoride increases cell death in hair follicles, but sodium selenite can reduce this effect.
Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.