L cysteine

L-cysteine contains a sulphur-bearing thiol group that forms structural bonds within proteins such as keratin. It also supplies a key building block for the antioxidant compound glutathione.

• Scientific identity: L-Cysteine; classification: Conditionally essential, sulphur-containing.
• How it works: Absorbed or made from methionine: It is conditionally essential, meaning the body can produce it when methionine is plentiful. Forms disulphide bridges: Pairs of cysteine thiols lock proteins into shape - most visibly the keratin of hair and nails, which is exceptionally cysteine-rich.
• Primary function: It contributes to protein structure, keratin formation and the body's normal antioxidant-related pathways.
• What it supports: L-Cysteine supports the building blocks of keratin and glutathione, connecting healthy-looking hair and nails with normal cellular antioxidant support.
• Important consideration: Its contribution depends on ingredient form, quantity and the complete formulation.

CARPEDIEM selected L-Cysteine for a clearly defined role within a thoughtfully balanced formulation.

• Formulation purpose: It contributes to protein structure, keratin formation and the body's normal antioxidant-related pathways.
• Used in: CARPEDIEM Hair Skin Nails and CARPEDIEM Women’s Beauty & Wellness Stack.
• Works alongside: L-Cysteine complements Reduced Glutathione, Biotin and Molybdenum to support a more coordinated functional-nutrition approach.
• Meaningful contribution: L-Cysteine supports the building blocks of keratin and glutathione, connecting healthy-looking hair and nails with normal cellular antioxidant support. Supplies a key building block used in the body's natural glutathione-producing pathways.
• Quality and scientific context: Its contribution depends on ingredient form, quantity and the complete formulation. Research is shown only when an ingredient-specific study demonstrates a relevant benefit.