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    Glossary L-cystine

    amino acid formed by linking two cysteine molecules

    L-cystine is an amino acid that forms when two molecules of cysteine, another amino acid, are linked by a disulfide bond. It plays a crucial role in the structure and strength of hair, skin, and nails by contributing to the formation of keratin, a key structural protein.

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    Research 30 of 1000+

    1. Effects of the Usage of l-Cysteine (l-Cys) on Human Health 2018 · 75 citations
    2. Chemoprevention of smoke-induced alopecia in mice by oral administration of l-cystine and vitamin B6 Journal of dermatological science · 2007 · 41 citations
    3. Reduction mechanism of L‐cysteine on keratin fibers using microspectrophotometry and Raman spectroscopy Biopolymers · 2005 · 29 citations
    4. Action of Thioglycolic Acid and L-Cysteine to Disulfide Cross-Links in Hair Fibers during Permanent Waving Treatment Sen'i Gakkaishi · 2008 · 18 citations
    5. Study on modification of rabbit hair fibers with L-cysteine Textile Research Journal · 2019 · 2 citations
    6. Redox-Modulatory and MET-Inhibitory Triad: Synergistic Cytotoxicity of L-cysteine, NAC, and MET Inhibition in Cervical Cancer Cells Eurasian journal of applied biotechnology · 2025
    7. Liquid Chromatography-Mass Spectrometry Based Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated L-Cysteine Juniper Online Journal Material Science · 2021
    8. Chemoprevention of doxorubicin-induced alopecia in mice by dietary administration of l-cystine and vitamin B6 Archives of Dermatological Research · 2012 · 11 citations
    9. L-Cystine-Containing Hair-Growth Formulation Supports Protection, Viability, and Proliferation of Keratinocytes Clinical, Cosmetic and Investigational Dermatology · 2020 · 2 citations
    10. Efficacy and Safety of L-Cystine Associated or not to a Natural Keratin (Kera-Dietandreg;) Hydrolysate on Hair and Nails: Randomised, Placebo-Controlled, Clinical Trial on Healthy Females Journal of cosmetology & trichology · 2019
    11. [Low dosage retinol and L-cystine combination improve alopecia of the diffuse type following long-term oral administration]. PubMed · 1989 · 16 citations
    12. Utilization of L-Cystine and L- and D-Methionine by Mink during the Period of Intensive Hair Growth Acta agriculturae Scandinavica · 1982 · 7 citations
    13. Efficacy and Safety of a Food Supplement Containing L-cystine, Serenoa repens Extract and Biotin for Hair Loss in Healthy Males and Females. A Prospective, Randomized, Double-blinded, Controlled Clinical Trial Journal of cosmetology & trichology · 2017 · 3 citations
    14. 51252 Oral supplementation with L-Cystine, Serenoa repens, Pumpkin seed oil and Pygeum africanum in Chronic Telogen Effluvium and Androgenetic Alopecia: A double-blind, placebo-controlled, randomized clinical study Journal of the American Academy of Dermatology · 2024
    15. Oral Supplementation with l-Cystine, <i>Serenoa repens</i>, <i>Cucurbita pepo</i>, and <i>Pygeum africanum</i> in Chronic Telogen Effluvium and Androgenetic Alopecia: A Double-Blind, Placebo-Controlled, Randomized Clinical Study Skin Appendage Disorders · 2024
    16. Clinical study on the efficacy and tolerability of an oral supplement based on arginine, l-cystine, zinc and B6 vitamin (Cystiphane®) in patients with telogen effluvium Italian journal of dermatology and venereology · 2023
    17. The human cysteine protease cathepsin V can compensate for murine cathepsin L in mouse epidermis and hair follicles European Journal of Cell Biology · 2004 · 51 citations
    18. Study on Extraction of L-cystine from Cattle Hair Leather Science and Engineering · 2007
    19. STUDY ON EXTRACTION OF L-CYSTINE BY ACID-HYDROLYSIS OF HAIRS 1989
    20. Electron microscopic and autoradiographic study of S35-L-cystine incorporation in mouse hair follicles Acta dermato-venereologica · 1971 · 1 citations
    21. THE INFLUENCE OF ALLOXAN DIABETES, METHYLTHIOURACIL, CORTISONE AND ADRENALINE ON THE UTILIZATION OF GLUCOSE 14C AND L-CYSTINE 35S AND MITOTIC ACTIVITY BY HAIR FOLLICLES IN WHITE MICE European journal of endocrinology · 1962 · 4 citations
    22. ミレットエキス,パントテン酸カルシウム,L—シスチン,ビオチン含有食品の摂取による毛髪密度および頭髪の外観変化の検証試験 薬理と治療 · 2019
    23. Cystine-thiamin-containing hair-growth formulation modulates the response to UV radiation in an in vitro model for growth-limiting conditions of human keratinocytes Journal of Photochemistry and Photobiology B-biology · 2018 · 9 citations
    24. Xenobiotics in Vitro: The Influence ofL-Cystine, Pantothenat, and Miliacin on Metabolic and Proliferative Capacity of Keratinocytes Cutaneous and ocular toxicology · 2006 · 9 citations
    25. Diffüz Alopesili Kadınlarda "Dijital Fototrikogram" ile "Darı Ekstresi, Buğday Tohumu Yağı, L-sistin, Kalsiyum Pantotenat" Formulasyonunun Etkisinin Değerlendirilmesi Turkderm · 2012
    26. Das Phototrichogramm als Verfahren zur Beurteilung haarwachstumsfördernder Präparate am Beispiel einer Kombination von Hirsefruchtextrakt, L-Cystin und Calciumpantothenat : Ergebnisse einer in vivo Untersuchung bei Frauen mit androgenetischem Haarausfall 2000
    27. Expression of the human Cathepsin L inhibitor hurpin in mice: skin alterations and increased carcinogenesis Experimental Dermatology · 2007 · 21 citations
    28. Characterization of transport systems for cysteine, lysine, alanine, and leucine in wool follicles of sheep 2007 · 9 citations
    29. Cystatin M/E Variant Causes Autosomal Dominant Keratosis Follicularis Spinulosa Decalvans by Dysregulating Cathepsins L and V Frontiers in Genetics · 2021 · 6 citations
    30. Deficiency of the human cysteine protease inhibitor cystatin M/E causes hypotrichosis and dry skin Genetics in medicine · 2018 · 10 citations