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.
June 2017 in “Asian journal of pharmaceutical and clinical research” Green tea extract gel safely increases eyelash length.
Chrysanthemum zawadskii extract may help treat hair loss by promoting hair growth and affecting growth factors.
521 citations
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January 1954 in “Physiological Reviews” Hair growth is cyclic and influenced mainly by local factors.
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.
200 citations
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November 1997 in “Planta” Calcium affects where root hairs grow, but other unknown factors determine their growth direction.
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.
90 citations
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October 1996 in “Dermatologic Clinics” Growth factors are crucial for hair development and could help treat hair diseases.
81 citations
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August 2014 in “Lasers in Surgery and Medicine” Red light therapy is safe and effectively increases hair growth in women with hair loss.
72 citations
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February 2011 in “American Journal of Biological Anthropology” The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.
68 citations
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March 1965 in “The BMJ” Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.
62 citations
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July 1993 in “Journal of Investigative Dermatology” Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.
53 citations
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March 2014 in “Growth Hormone & IGF Research” IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.
44 citations
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March 2004 in “Journal of Investigative Dermatology” The effects of estrogen on human hair growth are unclear and need more research.
41 citations
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July 2002 in “Clinical and Experimental Dermatology” Effective hair loss assessment requires a mix of precise measurement methods.
28 citations
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February 2016 in “F1000Research” Understanding glycans and enzymes that alter them is key to controlling hair growth.
26 citations
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May 2017 in “Lasers in Medical Science” Laser therapy and hair growth factors significantly improve hair density in male baldness.
26 citations
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October 2007 in “Experimental Dermatology” L-Carnitine-L-tartrate may help hair grow and prevent hair loss.
22 citations
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January 2015 in “Dermatology Research and Practice” An extra-strength marine protein supplement helped increase hair growth and decrease hair shedding in women with thinning hair.
20 citations
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February 2004 in “Veterinary dermatology” Dog hair grows back in about 14 weeks after being clipped for surgery, and the season doesn't really affect this growth rate.
16 citations
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July 1992 in “The journal of experimental zoology/Journal of experimental zoology” Adrenal glands delay the start of winter fur growth in mink.
15 citations
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May 2020 in “BMC complementary medicine and therapies” Polygonum multiflorum extract helps hair grow longer and fights the effects of hormones that cause hair loss.
13 citations
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January 2020 in “Experimental Dermatology” PRP growth factor concentrations vary, no significant hair growth difference found.
12 citations
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September 2021 in “The International Journal of Developmental Biology” Liposomal carriers can improve tissue regeneration by stabilizing and retaining growth factors.
12 citations
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May 2014 in “International Journal of Molecular Medicine” Chrysanthemum zawadskii extract helps hair grow by stimulating hair cells.
11 citations
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January 2017 in “Evidence-based Complementary and Alternative Medicine” DA-5512 effectively improves hair growth and health, performing better than minoxidil.
10 citations
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January 2010 in “Journal of cosmetic and laser therapy” The letter criticizes a study's methods and small size, suggesting larger, better-designed research would show low-level light therapy effectively grows hair.
9 citations
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January 2015 in “Laboratory Animal Research” Laminaria japonica and Cistanche tubulosa extracts combined may effectively promote hair growth.
7 citations
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July 2019 in “International Journal of Molecular Sciences” PGA-4HGF may help treat hair loss by activating hair growth pathways and extending the hair growth phase.
7 citations
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January 2019 in “Annals of dermatology/Annals of Dermatology” Synthetic ceramides may help hair growth by boosting cell growth in hair follicles.