40 citations
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April 2014 in “Genes & Development” Hormones during pregnancy and lactation keep skin stem cells inactive, preventing hair growth.
19 citations
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December 2016 in “PLOS ONE” Early-stage skin cells help regenerate hair follicles, with proteins SDF1, MMP3, biglycan, and LTBP1 playing key roles.
18 citations
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September 2015 in “Clinical Endocrinology” Women with PCOS have higher levels of a certain growth factor, which can be reduced by taking metformin.
12 citations
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February 1997 in “British Journal of Dermatology” The enzyme type 1 5α-reductase is more active in the hair follicle's lower part than in the skin's outer layer.
9 citations
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December 2013 in “Toxicological Research” Chamaecyparis obtusa oil may help hair grow similarly to minoxidil by affecting certain growth markers and cell factors.
5 citations
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October 2011 in “Small ruminant research” Goat hair growth and follicle activity change with the seasons and differ between males and females.
2 citations
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August 2020 in “Clinical, Cosmetic and Investigational Dermatology” The hair-growth formula with L-cystine helps protect and grow hair cells.
1 citations
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January 1992 in “Juntendō Igaku/Juntendo igaku” Minoxidil promotes hair growth by increasing blood flow and directly affecting hair follicles.
November 2025 in “International Journal of Zoology and Applied Biosciences” New technologies like AI, robotics, and stem cells have made hair transplants more effective and natural-looking.
June 2024 in “Skin Appendage Disorders” Both PRP and MZT treatments can significantly improve hair growth in patients with androgenetic alopecia.
The treatment was ineffective in humans.
46 citations
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January 2020 in “Theranostics” Injecting a special gel with human protein particles can help hair grow.
42 citations
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February 2018 in “International Journal of Molecular Sciences” Minoxidil boosts hair growth by triggering growth factor release from specific stem cells.
3 citations
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June 2006 in “Expert Review of Dermatology” The document concludes that hair loss is complex, affects many people, has limited treatments, and requires more research on its causes and psychological impact.
46 citations
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May 1986 in “Seminars in Reproductive Medicine” Testosterone and dihydrotestosterone affect hair growth, and new techniques like the folliculogram help study it, but fully understanding hair growth is still complex.
22 citations
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October 2018 in “Aesthetic Plastic Surgery” Understanding hair follicle biology and stem cell control could lead to new hair loss treatments.
12 citations
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May 2019 in “Aesthetic Surgery Journal” Platelet-Rich Plasma and stem cell therapy can increase hair count and density, but the best method for preparation and treatment still needs to be determined.
397 citations
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February 2004 in “British Journal of Dermatology” Minoxidil boosts hair growth by opening potassium channels and increasing cell activity.
156 citations
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December 2012 in “Cell Stem Cell” TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.
136 citations
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February 2017 in “International Journal of Molecular Sciences” PRP treatment improves hair growth, and the device used can affect results, with some being more effective.
87 citations
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March 2005 in “Journal of Dermatological Science” Asiasari radix extract promotes hair growth and increases protein synthesis and cell proliferation.
76 citations
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August 2018 in “International Journal of Cosmetic Science” Dermal Papilla cells are a promising tool for evaluating hair growth treatments.
61 citations
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July 2011 in “PLOS ONE” Spermidine may help reduce hair loss and deserves further testing as a treatment.
53 citations
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May 1990 in “Journal of Dermatology” Minoxidil speeds up hair growth in rats without prolonging growth phase.
52 citations
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September 2018 in “International Journal of Molecular Sciences” Ginseng and its compounds may help hair growth and prevent hair loss, but more human trials are needed to confirm this.
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.
20 citations
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December 2015 in “Journal of Pharmacopuncture” Thread-embedding therapy helped hair grow back in mice and might do the same in humans.
19 citations
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June 2008 in “Journal of Investigative Dermatology” HPV genes in mice improve ear tissue healing by speeding up skin growth and repair.
13 citations
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July 2016 in “BMC Complementary and Alternative Medicine” Hominis Placenta helps hair grow back by increasing cell growth and a specific growth factor.
7 citations
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April 2014 in “Cell biology international” Melatonin treatment helps improve skin health in postmenopausal rats.