Red clover and caffeine both promote hair growth, but combining them doesn't enhance the effect.
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July 1990 in “European Journal of Pharmacology” 
14 citations
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October 2016 in “Psychoneuroendocrinology” Finasteride affects brain processes related to neurotransmission and metabolism, potentially helping with neuropsychiatric conditions.
23 citations
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June 2017 in “Drug Design Development and Therapy” Cyclodextrins improve finasteride's solubility and bioavailability for hair loss treatment.
47 citations
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September 2013 in “Aaps Pharmscitech” Improved hair loss treatment using special particles and surfactants.
8 citations
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November 1976 in “Journal of Investigative Dermatology” 7 citations
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September 2003 in “Journal of Investigative Dermatology” PAR-1 may play a role in hair growth regulation in human hair follicles.
4 citations
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April 2009 in “Journal of Pain” Finasteride boosts morphine's pain relief and prevents tolerance and withdrawal in rats.
January 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” The gp130 receptor helps in tissue regeneration and disease progression, and manipulating it could improve healing and prevent disease.
32 citations
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March 2018 in “Neoplasia” Nephronectin is linked to worse breast cancer outcomes and helps cancer spread.
13 citations
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December 2009 in “Journal of the Peripheral Nervous System” TRPA1 and TRPV1 channels don't affect mechanotransduction in rat sinus hair follicles.
5 citations
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July 2014 in “Molecular Biology Reports” 
February 2025 in “FASEB BioAdvances” Verteporfin reduces growth and stem cell traits in rat hair follicle cells by blocking the Hippo pathway.
July 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” A new Wnt surrogate specifically targets the Frizzled7 receptor, promoting organoid formation and hair growth.
13 citations
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November 2023 in “International Journal of Nanomedicine” Nanofiber scaffolds show promise for improving nerve healing.
Finasteride affects prostate development differently in male and female Mongolian gerbils.
17 citations
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December 2001 in “Journal of Investigative Dermatology” The osteopontin gene is active in a specific part of rat hair follicles during a certain hair growth phase and might affect hair cycle and diseases.
15 citations
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January 2014 in “BioMed Research International” Heparin and protamine are promising in tissue repair and organ regeneration, including skin and hair.
3 citations
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February 2017 in “Archives of Medical Science” Finasteride treatment changes Cx43 in rat testes, possibly causing fertility issues.
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January 1971 in “Archives of Dermatological Research” 
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December 2013 in “Xenobiotica” Finasteride metabolites found in pigs match human studies, making pigs a valid model for human drug research.
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July 2009 in “Journal of human genetics” A gene variation is linked to hair thickness in Asians.
72 citations
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January 2011 in “Current Pharmaceutical Design” S5αR inhibitors might help treat schizophrenia and other mental disorders but need more research.
Finasteride may cause changes in dopamine-related genes, possibly leading to post-finasteride syndrome.
Sox13 is a marker for early hair follicle development but not essential for skin and hair growth.
January 2013 in “Tampere University Institutional Repository (Tampere University)” Tudor-SN is important for immune cells, and polyamines can promote hair growth.
December 2015 in “Endocrinology and Metabolic Syndrome” 
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March 2007 in “Hormones and Behavior” Finasteride boosts morphine's pain relief, stops tolerance, and reduces withdrawal in rats.
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April 2021 in “Frontiers in Pharmacology” Activating Nrf2 can help protect against hearing loss.
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May 1991 in “British Journal of Pharmacology” Cromakalim relaxes various blood vessels, while minoxidil sulphate is more selective; they likely act on different potassium channels.