2 citations
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December 2019 in “Textile Research Journal” This study found that L-cystine-modified rabbit hair fibers had improved dye adsorption and spinnability, due to changes in secondary structure and surface characteristics.
2 citations
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September 2011 in “Revista de Ciências Farmacêuticas Básica e Aplicada” This study examined a shampoo containing chili pepper extract and biopolymer microspheres for hair loss treatment, finding that it was well tolerated by volunteers, particularly due to the exfoliation sensation.
2 citations
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October 2010 in “BMB Reports” In this study, L-threonate was observed to inhibit DHT-induced DKK-1 expression in dermal papilla cells and reverse DHT's inhibitory effects on outer root sheath cell growth, suggesting potential as a treatment for androgen-driven balding.
2 citations
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August 2008 in “Oncotarget” In this study, intravital microscopy in live mice showed that apoptosis in hair follicle regression may be driven by apoptotic cells inducing neighboring cell death, with stem cells likely providing a pro-survival signal.
1 citations
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May 2025 in “International Immunopharmacology” This study found that L-borneol, derived from Chinese medicine, significantly promotes the differentiation of rat hair follicle stem cells into basal layer cells, aiding wound healing, with the process involving inhibition of the PODXL2 gene by the microRNA rno-miR-127.
1 citations
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January 2020 in “Journal of Biosciences and Medicines” This study found that a 5% gel with hydroalcoholic extract from black pop bean integument may have a photoprotective effect in mice exposed to UV-C radiation.
1 citations
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March 2012 in “Revue neurologique” This study reports that both a 9-month-old with phenylketonuria on a phenylalanine-free diet and mice on a deficient diet exhibited severe health issues, highlighting the need for cautious dietary management.
November 2025 in “Phytomedicine” This study identified rhamnose as a compound that promotes hair growth by enhancing glycolysis and stimulating hair follicle regeneration, highlighting its potential use in alopecia treatment through animal and human organ culture models.
November 2025 in “Eurasian journal of applied biotechnology” In this study, combining L-cysteine and N-acetylcysteine with MET inhibition enhanced cytotoxicity in cancer cell lines by sensitizing them to MET inhibition through redox stabilization, suggesting a promising approach for improving MET-targeted cancer therapies without additional oxidative or chemotherapeutic stress.
November 2025 in “Journal of Kufa for Chemical Sciences” This study suggests that L-Selectin and adiponectin may be useful markers for distinguishing between Metformin-treated and untreated PCOS patients.
January 2025 in “Journal of Plastic Reconstructive & Aesthetic Surgery” Two L-PRP treatments improve hair density in mild to moderate alopecia.
September 2024 in “Journal of the American Academy of Dermatology” No specific results were reported in this abstract; it aims to explore the psychological effects of hair loss conditions like Chronic Telogen Effluvium and Androgenetic Alopecia, emphasizing the potential link between micronutrient deficiency and hair health.
July 2024 in “Skin Appendage Disorders” This study found that after 6 months of taking an oral supplement, patients with chronic telogen effluvium or androgenetic alopecia experienced a statistically significant increase in hair density and overall improved hair appearance compared to those taking a placebo, with the supplement being well tolerated.
June 2023 in “Italian journal of dermatology and venereology” In this study, researchers evaluated an oral supplement containing arginine, l-cystine, zinc, and vitamin B6, finding it effective as an adjuvant treatment for telogen effluvium, as indicated by improved hair quantity and diameter after three months in 18 patients.
April 2023 in “Journal of Investigative Dermatology” RNase L suppresses regeneration in mammals.
March 2021 in “Juniper Online Journal Material Science” In this study, L-cysteine treated with the Trivedi Effect® showed significantly increased isotopic abundance ratios, which may enhance its stability and shelf-life.
January 2021 in “Journal of cosmetology & trichology” This study suggests that L-(+)-Tartaric Acid may support hair growth by up-regulating certain genes in human Dermal Papilla cells, making it a potentially useful additive in minoxidil formulations.
October 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” This study evaluated the effects of platelet-rich plasma (PRP) on endometriosis but found no statistically significant overall difference in endometriotic foci size reduction between treated and control groups.
January 2019 in “Journal of Pharmacognosy and Phytochemistry” This study identified 14 different phytoconstituents in the methanolic fruit extract of Citrullus colocynthis, suggesting its potential pharmacological importance.
This study found that a food supplement containing L-cystine, pantothenic acid, biotin, and millet extract significantly improved hair density and beauty parameters in healthy Japanese women with light diffuse hair loss after three months.
January 2019 in “Journal of cosmetology & trichology” In this study, researchers found that supplementation with L-cystine, either alone or with a keratin hydrolysate, significantly improved hair density, hair and nail brightness, and nail growth in women experiencing acute telogen effluvium and brittle nail syndrome over three months.
October 2018 in “Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano)” This review discusses mechanisms and potential dietary influences on alopecia, proposing molecular targets like TRPVs and endocannabinoids as avenues for treatment but reports no new clinical results.
This study assessed the effects of a formulation containing millet extract, wheat germ oil, L-cystine, and calcium pantothenate on women with telogen effluvium using Digital Phototrichogram, but it reports no new results.
December 2004 in “Annales d Urologie” This article examines the PCPT study on whether daily finasteride can reduce prostate cancer incidence, describing its methodology and findings but reporting no new clinical results.
September 2004 in “Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles)” This article reviews treatments for androgenic alopecia, discussing options like minoxidil for both genders and specific therapies for men and women, but it reports no new clinical results.
January 2004 in “Giornale di Metafisica: revista bimestrale di filosofia” This study suggests that increased Wnt signaling may promote excessive differentiation of melanocytes, leading to exhaustion of melanocyte stem cells and hair graying in aged mice.
This study concluded that a combination of millet seed extract, L-cystine, and calcium pantothenate may improve anagen hair rate in women with androgenetic alopecia over six months.
146 citations
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May 2002 in “The American journal of pathology” This study found that cathepsin L deficiency in mice led to significant abnormalities in hair follicle development and cycling, including disrupted hair shaft outgrowth and premature hair growth phase entry.
113 citations
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June 2010 in “Biological Chemistry” This study found that mice deficient in the enzyme cathepsin L exhibited impaired degradation of autophagolysosomal content, leading to an accumulation of large, abnormal vesicles in various tissues.
100 citations
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March 2006 in “Journal of biological chemistry/The Journal of biological chemistry” This study found that cystatin M/E strongly inhibits human cathepsin V and cathepsin L via distinct non-overlapping sites, suggesting an important role in human epidermal differentiation and hair follicle morphogenesis.