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Glossary Cystine

amino acid formed by linking two cysteine molecules

Cystine is an amino acid that forms when two cysteine molecules are linked by a disulfide bond. It is important for the structural stability of proteins, particularly in keratin, which is a key component of hair, skin, and nails. This bond helps maintain the strength and rigidity of these proteins, contributing to the overall health and resilience of hair and other tissues.

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research Chemoprevention of smoke-induced alopecia in mice by oral administration of l-cystine and vitamin B6

41 citations , March 2007 in “Journal of dermatological science”

This study found that oral administration of l-cystine with vitamin B6 effectively prevents environmental cigarette smoke-induced alopecia in mice by reducing hair bulb cell apoptosis.

research [Low dosage retinol and L-cystine combination improve alopecia of the diffuse type following long-term oral administration].

16 citations , August 1989 in “PubMed”

This study concluded that high-dose oral therapy with L-cystine, gelatin, and vitamin A significantly improved hair growth indicators in patients with diffuse hair loss, with no systemic side effects observed.

Cystine-Thiamin-Containing Hair-Growth Formulation Modulates the Response to UV Radiation in an In Vitro Model for Growth-Limiting Conditions of Human Keratinocytes

research Cystine-thiamin-containing hair-growth formulation modulates the response to UV radiation in an in vitro model for growth-limiting conditions of human keratinocytes

9 citations , September 2018 in “Journal of Photochemistry and Photobiology B-biology”

This study demonstrated that combining l-cystine and thiamin in a formulation may protect against UV-induced damage in growth-limited human epidermal keratinocytes in vitro.

Xenobiotics In Vitro: The Influence of L-Cystine, Pantothenate, and Miliacin on Metabolic and Proliferative Capacity of Keratinocytes

research Xenobiotics in Vitro: The Influence ofL-Cystine, Pantothenat, and Miliacin on Metabolic and Proliferative Capacity of Keratinocytes

9 citations , January 2006 in “Cutaneous and ocular toxicology”

This study found that L-cystine, D-pantothenat, and miliacin can enhance the metabolic capacity and proliferation of human keratinocytes, with a combination of these additives potentially providing synergistic benefits in growth media.