October 2025 in “Journal of Translational Medicine” This literature review discusses the challenges and potential strategies for creating fully functional hair follicles capable of active cycling, emphasizing the molecular mechanisms, signaling pathways, and innovative regenerative techniques, such as hair micropatterning and three-dimensional printing, crucial for optimizing hair follicle regeneration.
September 2025 in “Journal of Drug Delivery and Therapeutics” This review highlights the hair follicle's structural and functional properties as an effective route for delivering active compounds in treating hair disorders, focusing on emerging carrier technologies to enhance targeted transfollicular delivery.
April 2024 in “Frontiers in physiology” This review article examines recent studies on the role of diverse immune cells in forming an active niche for hair follicles, offering new insights into hair growth and related diseases.
378 citations
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November 2011 in “Human reproduction update” This review discusses the epidemiology, causes, diagnosis, and management of hirsutism in women, noting that effective treatment requires addressing the root cause as well as the hair growth.
109 citations
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October 2007 in “Journal of pineal research” This study suggests that melatonin plays a role in hair follicle function by modulating growth and pigmentation, and it may act as a protective agent in active hair growth phases.
23 citations
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May 2020 in “Cell Death and Disease” This study generated FGF5-knockout Dorper sheep using the CRISPR/Cas9 system, resulting in significantly increased fine-wool and active hair-follicle density, and explored downstream signaling pathways for potential applications in androgen alopecia treatment.
6 citations
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May 2011 in “Pharmacognosy Journal” This review discusses the causes of alopecia, including androgenetic alopecia, and potential active ingredients for hair regrowth, but it does not report new clinical results.
January 2023 in “Kafkas üniversitesi veteriner fakültesi dergisi/Kafkas üniversitesi veteriner fakültesi dergisi” In this study of Angora goats, researchers found that HOXC13 and other genes were overexpressed during the active hair growth phase, suggesting a role in mohair structure.
August 2025 in “Current Botany” This study suggests that Acrotrema arnottianum, a herb used in traditional medicine, contains biologically active metabolites like squalene and α-Tocopherol. It showed antibacterial effects against Staphylococcus aureus and antifungal properties against Candida albicans, while demonstrating antioxidant activity.
44 citations
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October 1990 in “Archives of Dermatological Research” The connective tissue around hair follicles changes structure throughout the hair cycle.
21 citations
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November 2019 in “Molecular & Cellular Proteomics” This study found that citrullinated proteins, which are implicated in rheumatoid arthritis, were abundant in outer membrane vesicles from Porphyromonas gingivalis but nearly absent in mutants, validating their approach to citrullinated peptide identification.
61 citations
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October 1996 in “Development” This study found that combining adult germinative epidermal cells with non-inductive dermal cells can stimulate hair follicle neogenesis, effectively altering the cells' status to enhance induction.
12 citations
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April 2017 in “Experimental and Therapeutic Medicine” This study found that patients with active severe alopecia areata exhibited decreased CD200 expression on T and B lymphocytes, which may be linked to an imbalance in Th1/Th2 immune equilibrium.
August 2024 in “Journal of Photochemistry and Photobiology B Biology” In this study, the combination of low level light therapy with arginine, arterial extract, or biotin tripeptide-1 was associated with improvements in hair density and follicle structure in androgenic alopecia.
June 2023 in “Frontiers in Genetics” This study suggests that the curly hair phenotype in Mangalitza pigs may involve complex gene interactions related to calcium signaling and lipid metabolism, rather than changes in TRPM2 or CYP4F3 expression.
47 citations
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September 2016 in “Reviews in endocrine and metabolic disorders” This review discusses the steroidogenic properties of human skin and suggests that impaired steroidogenesis may be linked to conditions like acne, rosacea, atopic dermatitis, and androgenic alopecia, but reports no new clinical results.
5 citations
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January 2025 in “Pharmaceuticals” This review highlights the potential of Coffea arabica as an active ingredient in skincare, noting its bioactive compounds from leaves and beans show promising anticellulite, anti-inflammatory, antioxidant, and anti-aging properties, with unique phenolic concentrations in leaves offering enhanced skin benefits.
July 2025 in “Biomolecules” This systematic review found that topical adenosine may increase hair thickness and density while reducing hair loss, but the strength of evidence is low due to issues with trial design and sample size.
January 2025 in “Molecules” In this review, the authors discuss caffeine's potential mechanisms and benefits as a hair loss treatment, noting its possible effectiveness and safety, though they caution that existing studies often have significant design flaws.
January 2025 in “International Journal of Nanomedicine” In this study, a metformin-loaded rosemary-based nanoemulgel was found to significantly enhance hair follicle growth in rats, suggesting its potential as a new treatment for androgenetic alopecia due to its promising physicochemical properties and controlled drug release.
158 citations
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August 2011 in “Reviews in endocrine and metabolic disorders” This review examines the functions of vitamin D and its receptor in skin and explores how these are regulated, reporting no new clinical results.
81 citations
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April 2009 in “Journal of Investigative Dermatology” This review discusses the shedding phase of the hair cycle, known as exogen, and reports no new findings while analyzing related processes like club fiber formation and release.
8 citations
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October 2018 in “Dermatologic Therapy” In this study of Indian patients with pattern hair loss, 40.8% showed low sulfotransferase enzyme activity in hair follicles, with a higher prevalence of low activity in men compared to women.
5 citations
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January 2016 in “Journal of Molecular Histology” Both main and alternative Wnt signaling are important for regrowing rodent whisker follicles.
July 2023 in “Dermatology Practical & Conceptual” This study found that a positive anagen pull test can be an indicator of lichen planopilaris activity, suggesting its utility in the clinical assessment of this condition.
139 citations
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July 1991 in “Journal of The American Academy of Dermatology” This article discusses the structure of hair follicles and their significance in evaluating hair disorders, but it does not report any new research findings.
97 citations
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September 2011 in “British Journal of Dermatology” The human hair follicle can store topical compounds and be targeted for drug delivery with minimal side effects.
51 citations
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January 2003 in “Hormone Research in Paediatrics” This review discusses hormonal influences on hair growth and suggests that understanding hormone-gene interactions may improve treatment of hirsutism and alopecia, but reports no new clinical findings.
38 citations
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September 2014 in “Cell and Tissue Research” This review explores the infundibulum's role and importance in skin diseases and emphasizes the need for further research into its biology and potential therapeutic targeting, but it presents no new findings.
36 citations
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December 2002 in “Experimental dermatology” This study found that procyanidin B-3, a compound isolated from barley extract, may promote hair growth by enhancing hair epithelial cell growth and counteracting TGF-β1's growth-inhibiting effects in vitro and in vivo.