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January 2000 in “Acta Oto-Laryngologica” Epidermal growth factor increases extra hair cells in newborn rat ears.
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January 2019 in “PubMed” cgVEGF164 boosts hair follicle growth in mice.
June 2021 in “National Medical Journal of China” Bimatoprost helps mouse hair grow by turning on a specific growth pathway.
June 2021 in “Cosmoderma” Hair transplantation techniques have improved, making the process safer and more effective with less visible scarring.
Applying thyroid hormones to the scalp can help hair grow.
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July 2017 in “PubMed” Injecting a mix of human skin and hair cells into mice can grow new hair.
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July 2003 in “Journal of biological chemistry/The Journal of biological chemistry” EGF controls hair growth by regulating hair follicles' growth phases.
April 2016 in “Journal of Investigative Dermatology” Autophagy, a cell recycling process, is crucial for prolonged hair growth and could be a potential target for treating hair growth disorders.
26 citations
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March 1986 in “Clinical and Experimental Dermatology” Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.
April 2016 in “Journal of the American Academy of Dermatology” A 4-year-old girl had a rare hair disorder affecting only part of her scalp.
January 2024 in “Biological & pharmaceutical bulletin” Panax ginseng extract helps human hair grow by encouraging growth phase transition and cell proliferation while reducing certain protein expression.
27 citations
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August 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers found new genes involved in hair growth, which could help develop new hair treatments.
January 1992 in “Proceedings of the New Zealand Society of Animal Production” Ferret hair growth starts between 0 and 4 days after melatonin treatment, with cell growth peaking in the hair germ and declining as the hair matures.
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January 1995 in “Postgraduate medicine” Excessive hair growth in women can be harmless or signal serious health issues, and treatment often includes medication and hair removal, with noticeable results after 3-6 months.
January 2016 in “Korean Journal of Pharmacognosy” Grateloupia elliptica, a type of marine algae, may promote hair growth by activating a specific cell growth pathway.
January 2021 in “대한본초학회지(본초분과학회지)” Achyranthis Radix ethanol extract helps hair grow.
November 2025 in “Essential Chem” Eclipta alba may help hair regrowth by boosting cell growth.
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July 2007 in “Aesthetic Surgery Journal” The document concludes that using autologous follicular unit implantation is a successful method to correct hairline deformities after facial rejuvenation.
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December 1990 in “Journal of Biological Chemistry” Two specific genes are more active during hair growth in mice.
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July 2019 in “Indian dermatology online journal” A 17-year-old girl and her brothers have a rare hair condition with long eyelashes, thick eyebrows, and easily pluckable hair.
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July 2012 in “International Journal of Trichology” Miniaturized hairs stay connected to muscle in alopecia areata, allowing possible regrowth, but not in androgenetic alopecia.
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September 2008 in “Dermatologic Therapy” Androgens can both increase and decrease hair growth in different parts of the body.
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January 2018 in “European journal of pediatric surgery reports” A baby girl's hair turned straight on one side due to a neck tumor and surgery, but it returned to curly as she recovered.
July 2025 in “InnovAiT Education and inspiration for general practice”
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April 2015 in “Current problems in dermatology” Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.
February 2026 in “Chinese Journal of Natural Medicines”
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March 2018 in “PLOS Biology” Autophagy is important for human hair growth and health.
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March 2015 in “Journal of Microbiology and Biotechnology” Ultra-high molecular weight poly-γ-glutamic acid may help promote hair growth.
July 2024 in “Journal of Investigative Dermatology” Topical thyroid hormones may boost hair growth.