Essential amino acid; collagen crosslinking role; supports collagen synthesis when topically applied (penetration limited); hair strengthening; low sensitization risk
Function & Common Use
Skin Conditioning / Hair Conditioning
Conditioner
Hair care strengthening products serums
Synthetic / Fermentation
Concentration Limits
No limit
No limit
No specific 21 CFR cosmetic limit identified in source checked; EU limit reference: No
No specific MFDS limit identified in source checked; verify if ingredient is used in a Korean functional cosmetic category
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Lysine safe to use in skincare?
Lysine has a Low concern rating from The Clean Sheet. Essential amino acid; collagen crosslinking role; supports collagen synthesis when topically applied (penetration limited); hair strengthening; low sensitization risk
Is Lysine allowed in India?
Lysine is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Lysine used for in cosmetics?
Lysine functions as: Skin Conditioning / Hair Conditioning. It is commonly found in: Hair care strengthening products serums.
Regulatory Status
Cosmetic ingredient; standard TGA cosmetic framework applies; no therapeutic goods listing required unless therapeutic claims are made
Not specifically listed as restricted cosmetic ingredient in NHPID source checked; standard Health Canada cosmetic notification applies
Identifiers
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