August 2022 in “Nutrients” Nutritional supplements may help improve hair growth in female pattern hair loss.
41 citations
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July 2001 in “PubMed” Estrogens can reduce DHT production in hair follicles, but are less effective than finasteride and progesterone.
4 citations
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April 2001 in “Experimental Dermatology” Using single dermal papillae is unreliable for analyzing androgen metabolism in hair follicles.
November 2025 in “Phytomedicine” L-rhamnose may promote hair growth by boosting energy production in cells.
September 2017 in “Journal of Investigative Dermatology” Stabilizing HIF-1A in hair follicles may reduce oxidative stress and promote hair growth by increasing glycolysis.
22 citations
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April 1972 in “Journal of Steroid Biochemistry” Beard hair follicles convert testosterone to 5α-dihydrotestosterone most intensively.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Blocking a key energy pathway in human hair follicles can trigger stress responses that stop cell growth.
19 citations
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November 2018 in “Nutrients” Annurca apple extract may protect mouse hair from damage by chemotherapy and could help treat hair loss without promoting cancer growth.
31 citations
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October 1971 in “Steroids” Human beard hair follicles change testosterone into other related hormones, but don't much change androstenedione into testosterone.
January 2026 in “British Journal of Dermatology” Caffeine and DMG increase calcium influx in hair follicle cells without being toxic.
71 citations
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June 1993 in “Journal of Investigative Dermatology” August 2023 in “Chinese Medicine” 7 citations
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September 2019 in “Journal of Investigative Dermatology” 9 citations
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February 2004 in “Veterinary Dermatology” Canine hair follicle cells metabolize DHEA and testosterone differently than human cells.
8 citations
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July 2020 in “BMC genomics” The research found genes that change during cashmere goat hair growth and could help determine the best time to harvest cashmere.
4 citations
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February 2022 in “Frontiers in molecular biosciences” Chronic stress in mice changes skin metabolism and gene expression, leading to hair loss.
July 2026 in “Journal of Investigative Dermatology” Gut microbes influence how different fats affect skin and hair health.
January 2020 in “Journal of St. Marianna University” Human placenta extract may promote hair growth by affecting certain lipid compounds.
1 citations
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January 1996 Cysteine and arginine are essential for hair growth and thickness.
202 citations
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August 2017 in “Nature cell biology” Lactate production is important for activating hair growth stem cells.
159 citations
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July 2006 in “Endocrine Reviews” Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.
50 citations
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September 2011 in “Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids” Maintaining the right amount of retinoic acid is crucial for healthy hair and skin.
31 citations
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August 2001 in “PubMed” Hair follicles convert androgens, affecting hair loss patterns.
30 citations
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October 2016 in “Current research in translational medicine” Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.
25 citations
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July 2019 in “Experimental Dermatology” Cholesterol balance is important for hair health, and problems with it can lead to hair loss conditions.
20 citations
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October 2017 in “Stem Cell Reports” Alkaline Ceramidase 1 prevents early hair loss in mice by keeping hair follicle stem cells balanced.
16 citations
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January 2021 in “BMC Genomics” Higher hair follicle density leads to more wool in rabbits, influenced by specific genes and lncRNAs.
12 citations
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April 2019 in “Scientific Reports” A protein called HMGB1 helps hair grow by affecting prostaglandin metabolism.
7 citations
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March 2021 in “Journal of Investigative Dermatology” Lipases, especially gehB, are crucial for Staphylococcus aureus to enter and colonize hair follicles.
5 citations
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January 2016 in “Genetics and Molecular Research” Researchers found 617 genes that behave differently in cashmere goat hair follicles, which could help understand hair growth.