July 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Chitosan slows root hair growth and causes a buildup of callose at low concentrations, but at high concentrations, it only inhibits growth without callose buildup.
April 2018 in “Journal of Investigative Dermatology” Blocking a specific immune cell signal can trigger hair growth.
Biotin boosts wool growth and follicle health in sheep.
A bald man grew hair on his head after taking a drug called diazoxide, but lost it again when he stopped the medication.
March 2005 in “Journal of The American Academy of Dermatology” Herbal extract improves hair growth in female pattern baldness.
256 citations
,
October 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Growing human skin cells in a 3D environment can stimulate new hair growth.
211 citations
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October 2001 in “The FASEB Journal” Noggin is necessary to start the hair growth phase in skin after birth.
137 citations
,
September 2005 in “Proceedings of the National Academy of Sciences of the United States of America” The HR protein helps hair grow by blocking a hair growth inhibitor, aiding in hair follicle regeneration.
112 citations
,
July 1998 in “Journal of Investigative Dermatology” Ruby laser pulses best destroy hair follicles during the growth phase and effectiveness varies with laser intensity; melanin is key for targeting, and timing treatments can improve results.
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.
53 citations
,
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.
52 citations
,
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.
51 citations
,
January 2003 in “Hormone Research in Paediatrics” Hormones and their receptors, especially androgens, play a key role in hair growth and disorders like baldness.
42 citations
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March 2018 in “PLOS Biology” Autophagy is important for human hair growth and health.
40 citations
,
October 2002 in “Endocrinology” Vitamin D3 analogs can promote hair growth in mice genetically prone to hair loss.
39 citations
,
March 2008 in “Growth hormone & IGF research” Raspberry ketone may help grow hair and improve skin elasticity.
37 citations
,
April 2017 in “npj Regenerative Medicine” PDGF signaling is crucial for maintaining and renewing hair follicle stem cells, which could help treat hair loss.
37 citations
,
January 2002 in “British journal of dermatology/British journal of dermatology, Supplement” Apple extract called procyanidin B-2 was found to greatly increase hair growth.
34 citations
,
February 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride and minoxidil together promote hair growth better than either alone.
27 citations
,
June 2023 in “Nature” Senescent melanocytes can boost hair growth by activating hair stem cells.
24 citations
,
January 2015 in “Evidence-based Complementary and Alternative Medicine” Polygonum multiflorum can promote hair growth when taken orally or applied topically.
21 citations
,
January 2010 in “International Journal of Trichology” TrichoScan often makes mistakes and needs improvement for correct hair growth analysis.
19 citations
,
January 2010 in “International Journal of Ayurveda Research” Tectona grandis Linn. seeds extract improved hair growth in mice better than minoxidil.
18 citations
,
January 2007 in “Pharmaceutical Biology” Citrullus colocynthis extract is effective for hair growth, comparable to minoxidil.
17 citations
,
May 2011 in “Gene Therapy” Using polyethylenimine-DNA to deliver the hTERT gene can stimulate hair growth and may be useful in treating hair loss, but there could be potential cancer risks.
15 citations
,
July 2019 in “Journal of Investigative Dermatology” CBD can either reduce inflammation and not affect hair growth at low levels or inhibit hair growth at high levels.
15 citations
,
June 2015 in “Lasers in Medical Science” The 830-nm wavelength was most effective at promoting hair growth in rats using low-level laser therapy.
14 citations
,
June 2018 in “Frontiers in pharmacology” Green tea compound EGCG helps mink hair follicles grow by affecting certain cell growth pathways.
11 citations
,
September 2020 in “Journal of Cosmetic Dermatology” Silver nanoparticles can significantly promote hair growth.
11 citations
,
January 2017 in “Evidence-based Complementary and Alternative Medicine” DA-5512 effectively improves hair growth and health, performing better than minoxidil.