January 2023 in “International journal of research publications” According to this study, rice bran oil was as effective as 2% minoxidil in improving hair growth parameters, such as VEGF expression, follicle diameter, and hair length, in Wistar rats treated for 21 days, showing potential for preventing hair thinning associated with aging.
August 2023 in “The Indonesian Biomedical Journal” This study on UVB-exposed mice found that topical application of 10% Rosmarinus officinalis essential oil significantly increased hair length and follicle diameter, attributed potentially to its antioxidant compounds.
This study found that applying topical cinnamon essential oil on male wistar rats increased hair length and hair follicle diameter similarly to 2% minoxidil over 30 days.
28 citations
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October 2011 in “International Journal of Molecular Medicine” In this study, adenosine was found to stimulate hair follicle growth in vitro by promoting growth factor expression, β-catenin activation, and downstream signaling pathways.
4 citations
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June 2021 in “Frontiers in Pharmacology” This study found that injecting bone marrow-derived mesenchymal stem cells and conditioned medium into mice promoted hair follicle stem cell proliferation and transition to active growth phases, suggesting potential clinical targets for hair loss treatment.
60 citations
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April 2003 in “Biomaterials” This study found that the controlled release of specific growth factors from biodegradable hydrogels significantly enhanced hair follicle growth and hair shaft length in mice compared to growth factors in solution.
June 2005 in “Key Engineering Materials” This study found that biodegradable hydrogels loaded with various growth factors significantly enhanced hair follicle growth and blood vessel formation in mice, demonstrating a positive effect on their hair growth cycle.
December 2022 in “Scientific Reports” This study found that transplanted hair follicle-associated pluripotent stem cells in mice differentiated into keratinocytes and stimulated hair growth by producing mature hair shafts.
25 citations
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April 2018 in “Electromagnetic biology and medicine” This study found that radiofrequency radiation from mobile phone use may increase DNA damage in hair follicle cells of the ear canal, with greater exposure duration linked to higher damage levels.
8 citations
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August 2020 in “Domestic Animal Endocrinology” This study found that melatonin treatment improved cashmere production for one cycle in cashmere goats, enhancing fiber quality and follicle activity, but had no effects in the subsequent cycle.
7 citations
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January 2001 in “Annales de zootechnie” This study found that melatonin treatment significantly increased wool production and hair follicle activity in German angora rabbits, with larger effects seen in defleeced animals and those treated in July.
1 citations
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January 2012 in “Jounal of The Korean Society of cosmetology” Tremella fuciformis Berk helps protect hair from stress-related damage.
April 2024 in “Frontiers in endocrinology (Lausanne)” In this meta-analysis, researchers found that melatonin did not affect primary hair follicles or litter size in goats but was positively correlated with secondary follicle growth, suggesting potential relevance for studying hair growth mechanisms and human alopecia.
January 2024 in “Pediatric Dermatology” This case study found that a 9-year-old girl with trichorhinophalangeal syndrome type 1 experienced significant improvements in hair density and length after 4 months of topical minoxidil treatment, suggesting its therapeutic potential for this condition.
October 2023 in “IBRO neuroscience reports” Rat hair follicle stem cells have functional oxytocin receptors, useful for studying neuropsychiatric disorders.
April 2018 in “Journal of Investigative Dermatology” This study found that dermal white adipose tissue surrounding human hair follicles enhances proliferation, pigmentation, and hair shaft elongation in an ex vivo setting.
June 2013 in “International Journal of Dermatology” This study found that among HIV-infected women, central lipohypertrophy was associated with shorter eyelashes but not changes in scalp hair texture or inflammation.
13 citations
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January 2002 in “Biological chemistry” This study found that hair follicle-specific keratins can form different structural assemblies depending on ionic conditions, with hair cortex keratins requiring physiological salt conditions to form intermediate filaments.
2 citations
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September 2023 This study found that among Inner Mongolian cashmere goats, body weight gain during the non-growing period positively correlated with increases in cashmere yield, staple length, and secondary hair follicle activity, suggesting that nutritional interventions may enhance cashmere production.
136 citations
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July 2014 in “Proceedings of the National Academy of Sciences of the United States of America” This study identified mutations in the FGF5 gene as a cause of extreme eyelash growth in Pakistani families, highlighting a potential target for regulating eyelash growth.
7 citations
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March 2022 in “Frontiers in Genetics” This study identified genetic loci and pathways associated with long hair growth in the Tianzhu white yak, providing new insights into the genetic mechanisms of this trait.
39 citations
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July 2016 in “Biomedicine & Pharmacotherapy” In this animal study, researchers found that cedrol, a constituent from Platycladus orientalis, significantly promoted hair growth in a dose-dependent manner in female C57BL/6 mice, surpassing results from blank control and 2% minoxidil groups over 21 days.
12 citations
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September 2014 in “Journal of Food Science and Nutrition” This study suggests that Platycarya strobilacea extract promotes hair growth in mice by enhancing stem cell factor expression, reducing mast cell numbers, and increasing cytokines associated with hair growth.
12 citations
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February 2022 in “Acta Biomaterialia” In this study, researchers found that dissolving microneedles made with hyaluronic acid enhanced the effectiveness of minoxidil in reducing hair loss and promoting hair growth in alopecia-affected mice more effectively than topical minoxidil alone, while using only 10% of the drug amount.
9 citations
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March 2009 in “European Journal of Dermatology” In this animal study, the researchers found that Schisandra nigra extract may promote hair growth by extending the anagen phase and reducing TGF-beta2 expression.
3 citations
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August 2022 in “Molecules/Molecules online/Molecules annual” This study found that microbial adenosine and biotin treatments derived from Staphylococcus epidermidis Cicaria culture may help inhibit hair loss by maintaining the hair's growth phase.
January 2023 in “Pharmaceutics” In this study, researchers developed a new topical atraric acid formulation, AA-TF#15, which showed a significantly higher drug penetration and increased hair regrowth in mice compared to minoxidil and finasteride treatments, suggesting its potential effectiveness for treating scalp androgenic alopecia.
84 citations
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February 1981 in “Journal of Endocrinology” This study found that epidermal growth factor decreased hair growth rate and altered hair characteristics in neonatal mice, with some effects persisting into subsequent hair generations.
September 2024 in “Journal of Microbiology and Biotechnology” In this study, the researchers found that their conductive bio-harvesting tonic enhanced hair follicle proliferation and delayed regression with electric stimulation and the antifungal agent 6-pentyl-α-pyrone in both mice and human hair follicle tests.
42 citations
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June 2019 in “Aging” This study found that treatment with the polyphenolic compound TCQA activated β-catenin, promoting hair regrowth and the initiation of the anagen phase in mice and human dermal papilla cells.