October 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found that the developed hydrogel nanoparticles showed potential for enhancing hair growth by effectively delivering and releasing hair growth-promoting herbal extracts into hair follicles.
46 citations
,
June 2013 in “Journal of structural biology” This study suggests that the mechanical robustness of hair may be enhanced by the binding interactions of keratin-associated proteins, particularly KAP8.1, with intermediate filament proteins.
3 citations
,
January 2013 in “Journal of cosmetics, dermatological sciences and applications” This study found that the new HCC additive enhances the permeation of pigments and active ingredients into hair, suggesting potential use in developing functional cosmetic hair products.
9 citations
,
March 2015 in “Journal of Microbiology and Biotechnology” This study found that ultra-high molecular weight poly-γ-glutamic acid promoted hair growth in telogenic C57BL/6 mice by inhibiting 5-alpha reductase activity and inducing the anagen phase.
3 citations
,
April 2015 in “Current problems in dermatology” This study focuses on improving the detection and characterization of an enzyme in guinea pig hair follicles that converts arginine to citrulline, highlighting challenges with assay sensitivity and reproducibility.
August 2026 in “European Journal of Pharmacology” 103 citations
,
February 1972 in “Proceedings of the National Academy of Sciences” This study found that a unique transglutaminase in guinea pig hair-follicles, distinct from liver transglutaminase, likely plays a role in forming protein cross-links via ε(γ-glutamyl)lysine bonds.
16 citations
,
January 2017 in “Physical chemistry chemical physics/PCCP. Physical chemistry chemical physics” This study presents computational modeling and experimental analysis of the HGT protein KAP8.1, identifying key structural features that may influence hair's response to environmental conditions.
February 2025 in “Advanced Composites and Hybrid Materials” This study reported that in animal studies of androgenetic alopecia, a biodegradable microneedle patch releasing glutamic acid promoted hair regeneration more effectively than daily minoxidil, with higher hair follicle counts and less frequent dosing, showing the potential for clinical application.
13 citations
,
June 2020 in “International Journal of Molecular Sciences” This study found that the humanin analogue HNG significantly promoted hair growth in vitro and in vivo by prolonging the anagen phase and inhibiting hair follicle cell apoptosis in mice.
This study found that human growth hormone encapsulated in nano-liposome increased the number of hairs and stimulated hair cycling in mice, suggesting potential benefits for addressing hair loss.
22 citations
,
October 2019 in “International Journal of Nanomedicine” This study suggests that the hydrogel nanoparticle formulation of hair growth-promoting compounds may enhance hair follicle penetration and induce hair growth in tested models, demonstrating its potential as a hair growth treatment.
January 2010 in “Acta Laboratorium Animalis Scientia Sinica” This research reports that the ultra-high sulfur keratin promoter acts as a tissue-specific promoter in mouse hair follicles, as shown by induced expression of GFP and β-gal in that region post-transfection.
January 2024 in “Advanced Healthcare Materials” In a mouse model of androgenetic alopecia, this study developed a treatment combining a copper-curcumin nanoparticle oleogel with traditional Gua Sha therapy, which augmented hair regeneration more effectively than minoxidil by improving the follicular microenvironment and regulation of inflammatory responses.
91 citations
,
May 1972 in “Journal of Biological Chemistry” This research found that the transfer reaction catalyzed by human plasma and guinea pig hair follicle transglutaminases aligns with a ping-pong mechanism involving peptide-bound glutamine.
September 2026 in “Advanced Materials Technologies” In a mouse model study, researchers developed a methacrylated hyaluronic acid-based hydrogel microneedle patch co-loaded with finasteride and a carbon monoxide-releasing molecule for androgenetic alopecia, which showed better hair regrowth and safety compared to traditional treatments, offering an innovative approach with minimized systemic side effects.
May 2019 in “Journal of Acupuncture Research” This study found that pharmacopuncture and topical application of Sebalgukhwa-san extract improved hair growth, density, and thickness in an alopecia mouse model without affecting liver function.
June 2024 in “British Journal of Dermatology” In this study, researchers described cases of traction alopecia in young Sikh boys due to hair tying practices, emphasizing the importance of early intervention and education to prevent progression and support hair regrowth, using strategies like changing hair tying methods and topical treatments when appropriate.
7 citations
,
July 2019 in “International Journal of Molecular Sciences” This study found that PGA-4HGF nanoparticles enhanced hair growth in mice more effectively than 4HGF alone by increasing anagen phase duration and dermal papilla cell proliferation.
7 citations
,
January 2002 in “Biological Trace Element Research” This study found that children with pituitary dwarfism had higher zinc and copper hair concentrations and lower manganese concentrations compared to healthy children.
2 citations
,
February 2012 in “PubMed” This study found that Gp₄G increased hair length, papilla cell numbers, and versican deposition in treated animals, potentially through alterations in hair follicle phases and nucleotide concentrations.
December 2025 in “Journal of Nanobiotechnology” This study introduced a novel microneedle-based system for androgenetic alopecia treatment, which delivered Ginsenoside Compound K and S-nitrosoglutathione to enhance hair regeneration by improving the hair follicle microenvironment and promoting follicular cell proliferation.
8 citations
,
November 1976 in “Journal of Investigative Dermatology”
15 citations
,
January 1992 in “Sen'i Gakkaishi” This study suggests that the cell membrane complex in hair cuticles contains hydrophilic regions with disulfide bonds allowing polymer uptake and hydrophobic lamella-like lipid layers.
6 citations
,
April 2022 in “Biomedicine & pharmacotherapy” This review discusses the potential of using triads of repositioned medicines targeting multiple pathogenic mechanisms to prevent or delay retina degeneration, but reports no new results.
December 2023 in “Materials Today Sustainability” Scientists made glow-in-the-dark dots from human hair that can detect iron, prevent counterfeiting, and reveal fingerprints.
5 citations
,
January 1998 in “Journal of Toxicologic Pathology” This study found that topical treatment with Maneb led to delayed epithelial cell degeneration in hair follicles of rats due to apoptosis.
36 citations
,
March 2007 in “Journal of Chromatography B” This study developed a sensitive and specific method for detecting testosterone in horse hair, finding trace amounts in samples for up to five months after administering a single dose.
July 2026 in “Industrial and Domestic Waste Management” This study synthesized silver nanoparticles using Gandaria stem bark extract, finding that nanoparticles at a 4% concentration were particularly effective for selectively detecting mercury over lead and calcium, making them suitable as preliminary detection materials for mercury in facial whitening creams.
1 citations
,
August 2016 in “Hanbang an'i'bi'in'hu pibu'gwa haghoeji” In this study using lab models, YangHyulEum Gami-Bang (YHEG) was associated with promoting hair growth and inhibiting factors that contribute to hair loss.