L-Cystine
EATLABEL VERDICT
Generally Safe
Verified food additive with low risk profile
0 pts deduction
Overview & Primary Purpose
Dimeric sulfur amino acid forming the strong disulfide bridges of hair keratin and stimulating glutathione synthesis.
Official Category: Nutritional Enrichment (영양강화제)
3-Nation (KR · US · EU) Regulatory Status
🇰🇷
South Korea (MFDS)
Approved
Approved keratin sulfur amino acid
🇺🇸
United States (FDA)
Approved
FDA GRAS nutrient and dough conditioner
🇪🇺
European Union (EFSA)
Approved
Authorized nutrient
Commonly Found Foods
Hair growth supplementsskin-brightening gummiesenriched baby milks
Safer Clean-Label Alternatives
✓ L-cysteine
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