January 2017 in “Korean Journal of Pharmacognosy” This study found that pectin lyase-modified red ginseng extract may promote hair growth by enhancing antioxidant and anti-inflammatory activities, along with inhibiting testosterone-induced 5-alpha-reductase in human hair dermal papilla cells.
21 citations
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January 2010 in “JOURNAL OF HEALTH SCIENCE” This study found that abietic acid from pine resin more effectively inhibits testosterone 5α-reductase than several plant extracts, suggesting potential for treating androgen-dependent diseases.
4 citations
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October 2020 in “Toxicology Mechanisms and Methods” This study found that in male rats, hesperidin co-administration ameliorated finasteride-induced testicular toxicity by reducing oxidative stress and improving antioxidant status, sperm parameters, and enzyme activity compared to finasteride treatment alone.
35 citations
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November 1989 in “Journal of steroid biochemistry/Journal of Steroid Biochemistry” This study found that epitestosterone acts as a weak antiandrogen by inhibiting receptor binding and 5α-reductase activity in animal models.
34 citations
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May 2012 in “International Journal of Molecular Sciences” This study found that Ecklonia cava enzymatic extract, particularly its component dieckol, promoted hair growth by increasing dermal papilla cell proliferation and inhibiting 5α-reductase activity in cultured vibrissa follicles and C57BL/6 mice.
27 citations
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February 2017 in “Biomedicine & Pharmacotherapy” This study found that white wax and its extract may promote hair growth in a mouse model of androgenetic alopecia by inhibiting 5α-reductase activity and increasing cell proliferation, with efficacy surpassing finasteride.
24 citations
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October 1994 in “Fertility and Sterility” This study suggests that in women with androgenic alopecia and men with premature balding, enhanced 5α-reductase activity and altered androgen conjugation, favoring sulfurylation, may be involved in scalp hair loss.
22 citations
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May 2003 in “Planta Medica” This study found that torilin from Torilis japonica fruit extract inhibited 5 alpha-reductase in vitro more effectively than alpha-linolenic acid but less effectively than finasteride.
16 citations
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March 2000 in “Clinical Biochemistry” In this study, women with androgenic alopecia showed increased excretion of steroid metabolites and heightened 5α-reductase activity, suggesting these may contribute to the condition's hormonal abnormalities.
14 citations
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June 2011 in “Steroids” This study found that several dehydroepiandrosterone ester derivatives effectively reduced prostate and seminal vesicle weight in gonadectomized hamsters treated with testosterone, demonstrating potential antiandrogen effects comparable to Finasteride.
11 citations
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October 2002 in “Pharmacology Biochemistry and Behavior” This study found that formalin-induced pain in rats nearly eliminates testosterone in the brain and spinal cord by likely increasing 5α-reductase activity, but normalizes serum levels after 24 hours.
10 citations
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January 2018 in “Functional Foods in Health and Disease” This study found that berry extracts, especially black raspberry extract, may have anti-aging effects due to their high antioxidant activities.
10 citations
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December 1996 in “Fertility and Sterility” This study found that in women with acne vulgaris, lower serum levels of 3α-androstanediol-glucuronide suggest reduced 5α-reductase activity compared to controls, indicating that 5α-reductase inhibitors may not be effective for acne treatment.
1 citations
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September 2020 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found that testosterone promotes proliferation, migration, and invasion in human glioblastoma cell lines through its conversion into dihydrotestosterone, which can be inhibited by drugs blocking 5α-reductase activity.
1 citations
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February 2014 in “Archiv Der Pharmazie” This study demonstrated that steroidal carbamates 7–10 altered mRNA expression related to lipid metabolism in hamster flank organs and inhibited 5α-reductase activity without binding to the progesterone receptor.
1 citations
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January 2014 This study found that biochanin A promoted hair growth in testosterone-induced alopecia mice, possibly by inhibiting 5α-reductase activity and altering testosterone activity.
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study reports that spironolactone, a potassium-sparing diuretic with antiandrogenic activity, effectively improves hair density, reduces shedding, and stabilizes symptoms in female pattern hair loss, though symptoms often recur after discontinuation, suggesting the need for sustained therapy.
January 2025 in “International Journal of Dermatology Research” In this study, a herbal preparation inhibited the conversion of testosterone to DHT and its binding on hair roots in vitro, suggesting potential as an alternative treatment for androgenic alopecia without the safety concerns associated with finasteride.
December 2024 in “International Journal of Molecular Sciences” This review suggests that linoleic acid, an essential fatty acid, may have various beneficial effects on skin health and hair growth through diverse biological activities observed in animal or skin cell models.
June 2023 in “Yaghag hoeji” In this study involving rat vibrissa follicles, U. japonica extract was found to enhance hair growth by increasing dermal papilla cell proliferation and accelerating the anagen phase but did not inhibit 5α-reductase activity, which is linked to androgenetic alopecia.
September 2021 in “Han'gug mi'saengmul saengmyeong gong haghoeji/Han-guk misaengmul saengmyeong gonghak hoeji” This study found that an ethanolic extract from the microalga Tetrathelmis tetrathele exhibited anti-inflammatory effects, promoted the proliferation of certain skin and hair cells, and inhibited 5α-reductase activity, suggesting its potential as a therapeutic agent for preventing alopecia and enhancing scalp health.
This study suggests that Crinum asiaticum var. japonicum extract and its component norgalanthamine may promote hair growth by inhibiting 5α-reductase activity and the TGF-β1-induced pathway.
This study found that pectin lyase-modified red ginseng extract (GS-E3D) may promote hair growth by enhancing antioxidant and anti-inflammatory effects, proliferating hair dermal papilla cells, and inhibiting 5α-reductase activity.
September 2016 in “Journal of the Society of Cosmetic Scientists of Korea” This study found that Resina Pini and its main component, abietic acid, significantly promoted hair growth in a mouse model of androgenic alopecia by inhibiting 5α-reductase activity.
April 2006 in “Dermatologic Clinics” This study found that white wax and its extract significantly promoted hair growth in a mouse model of androgenetic alopecia, outperforming finasteride by inhibiting 5α-reductase activity and enhancing cellular proliferation.
June 2022 in “Journal of Cosmetic Dermatology” This study found that the ethanolic extract of Acanthus ebracteatus demonstrated potential as an anti-hair loss treatment by promoting dermal papilla cell proliferation, inhibiting 5α-reductase activity, and reducing inflammation in vitro.
April 2019 in “Advances in integrative medicine” This study found that the highest rebound value in concrete with high volume slag occurs with 40% slag content, 10–20 mm basalt aggregates, and greater carbonation depth.
January 2006 in “The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology” This study found that Rubus coreanum extract promotes hair growth in mice, but its effects are not due to inhibition of specific enzymatic activities or growth factor expression.
76 citations
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April 2013 in “PLoS ONE” The researchers reported that reactive oxygen species regulate the stress-induced SP-Mast cell pathway, which might support using antioxidants to treat stress-related hair loss.
58 citations
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March 2006 in “Current topics in medicinal chemistry” This review describes how dutasteride, a dual 5alpha-reductase inhibitor, has improved outcomes in benign prostatic hyperplasia and is being studied for prostate cancer prevention, without new data reported.