Some plant-based ingredients may help with hair growth and care, but more research is needed to confirm their effectiveness.
February 2020 in “Definitions” 5 Alpha-Reductase Inhibitors reduce the effects of testosterone by blocking its conversion into a stronger form.
January 2025 in “Cellular and Molecular Biology” The PIP5K1A gene helps cashmere growth in goats by promoting cell proliferation, and melatonin boosts its expression.
4 citations
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October 2024 in “Heliyon” CYP154C7 enzyme can effectively modify steroids and is promising for commercial use.
1 citations
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August 2019 in “Journal of Investigative Dermatology” PRDX5 enzyme may contribute to alopecia areata by affecting oxidative stress and autoimmunity.
July 1995 in “Journal of Dermatological Science”
May 2024 in “European Journal of Immunology” Vitamin B5 and coenzyme A may help regulate the immune system and could improve treatments for chronic diseases and cancer.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.
32 citations
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April 2016 in “Journal of Investigative Dermatology” STAT5 activation is crucial for starting the hair growth phase.
February 2026 in “UiTM Institutional Repositories (Universiti Teknologi MARA)” Cis-UCA can form new compounds without enzymes, and sulphide donors reduce its UVB-induced toxicity in skin cells.
9 citations
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March 1999 in “Der Hautarzt” Type 2 5α-reductase plays a key role in hair loss.
11 citations
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October 2014 in “Gene” Researchers identified a new variant of the FGF5 gene in sheep that affects hair length.
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September 2010 in “Medical Hypotheses” 48 citations
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March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” Retinoic acid production and signaling in hair follicles are regulated by location and timing, affecting hair growth and cycling.
253 citations
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April 2009 in “Journal of Biological Chemistry” p2y5, now called LPA6, is a receptor important for human hair growth.
612 citations
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February 2004 in “Nature” OXI1 kinase is essential for plant defense and root hair growth in Arabidopsis.
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April 2013 in “Stem cells” LGR5 helps maintain corneal cell characteristics and prevents unwanted changes by controlling specific cell signaling pathways.
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January 2018 in “Advances in experimental medicine and biology”
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October 1998 in “Journal of The American Academy of Dermatology” Finasteride safely and effectively treats male pattern hair loss, but may cause reversible sexual issues and harm male fetuses.
195 citations
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February 2007 in “The Journal of Clinical Endocrinology and Metabolism” Dutasteride and finasteride may reduce sperm count and volume but don't affect movement or shape; effects are reversible after stopping.
134 citations
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February 2005 in “Neuropsychopharmacology” GABRA2 gene variations impact alcohol response, and hair loss medication finasteride reduces some effects.
99 citations
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October 2006 in “BMC clinical pharmacology” Finasteride may cause slight depression and anxiety.
97 citations
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January 2014 in “Journal of The American Academy of Dermatology” Dutasteride 0.5 mg works better than finasteride and placebo for increasing hair in men with hair loss.
92 citations
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June 2010 in “Journal of The American Academy of Dermatology” Dutasteride 0.5 mg daily improves hair growth safely in men with hair loss.
69 citations
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December 2011 in “Journal of Ethnopharmacology” Some Thai plants, especially Carthamus tinctorius, could help prevent hair loss and promote hair growth without adverse effects.
65 citations
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October 1999 in “Journal of The American Academy of Dermatology” Finasteride effectively reduces hair loss by decreasing androgen levels.
54 citations
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May 2018 in “Journal of The European Academy of Dermatology and Venereology” Low level laser therapy works best for hair loss, followed by PRP, finasteride, and minoxidil.
46 citations
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October 1999 in “Journal of The American Academy of Dermatology” Finasteride effectively treats male pattern hair loss with a 1 mg daily dose.
42 citations
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February 1998 in “The Journal of Steroid Biochemistry and Molecular Biology” PNU 157706 is a more effective treatment than finasteride for conditions caused by DHT, like enlarged prostate and hair loss.
36 citations
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June 2014 in “International Journal of Dermatology” Dutasteride helps hair growth in those unresponsive to finasteride, but may cause more sexual dysfunction.