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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.

    Related Terms

    Learn 9 of 14

    1. L-cysteine
    2. L-methionine
    3. L-Lysine
    4. L-Proline
    5. L'Carnitine
    6. L-Tyrosine HCL
    7. L- Arginine HCL
    8. L- Arginine Alpha- Ketoglutarate
    9. Acetyl L-Carnitine
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    Research 10 of 1000+

    1. Chemoprevention of smoke-induced alopecia in mice by oral administration of l-cystine and vitamin B6 Journal of dermatological science · 2007 · 41 citations
    2. [Low dosage retinol and L-cystine combination improve alopecia of the diffuse type following long-term oral administration]. PubMed · 1989 · 16 citations
    3. Chemoprevention of doxorubicin-induced alopecia in mice by dietary administration of l-cystine and vitamin B6 Archives of Dermatological Research · 2012 · 11 citations
    4. Utilization of L-Cystine and L- and D-Methionine by Mink during the Period of Intensive Hair Growth Acta agriculturae Scandinavica · 1982 · 7 citations
    5. 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
    6. L-Cystine-Containing Hair-Growth Formulation Supports Protection, Viability, and Proliferation of Keratinocytes Clinical, Cosmetic and Investigational Dermatology · 2020 · 2 citations
    7. Study on modification of rabbit hair fibers with L-cysteine Textile Research Journal · 2019 · 2 citations
    8. 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
    9. 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
    10. 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
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    Community 10 of 55

    1. Losing ground after 14 months of fin use and 11 months of min Reddit · 20 Jul 2022
    2. Protein's role in hair growth is more nuanced than just quantity Reddit · 22 Apr 2026
    3. Has anyone tried collagen supplements? Reddit · 9 Apr 2017
    4. L. reuteri (probiotic for Androgenic Alopecia) Reddit · 30 Mar 2026
    5. Would L arginine help male pattern baldness? Reddit · 10 Nov 2025
    6. Has anyone tried Stemoxydine from Vichy? It doesn't show stemoxydine %. L'oreal serioxyl is relatively expensive so looking for alternative. Reddit · 26 Feb 2025
    7. L'Oréal Garnier discontinued stemoxydine serum so how can people still buy it? Reddit · 9 Jan 2025
    8. L Doctor criticized my fin usage and suggested minox and HT as alternatives Reddit · 6 Nov 2024
    9. Forgotten Hair Loss Peptide by L'Oreal: KPV Reddit · 18 Aug 2024
    10. Vasodilators, Min, L-arginine, Niacin, Lisinoprol, etc. Reddit · 31 Mar 2023
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