Regulatory Status
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Safety Data
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Expert Verdict
Contains thiol-derived cysteine moiety with pH-dependent reducing activity; assess for compatibility with oxidation-sensitive actives due to limited published irritation and sensitization studies.
Regulatory Flags
Frequently Asked Questions
Is Lysine Carboxymethyl Cysteinate safe in cosmetics?
Contains thiol-derived cysteine moiety with pH-dependent reducing activity; assess for compatibility with oxidation-sensitive actives due to limited published irritation and sensitization studies. The EU classifies Lysine Carboxymethyl Cysteinate as "permitted". Safety rating: GOOD.
Is Lysine Carboxymethyl Cysteinate allowed in the EU?
Lysine Carboxymethyl Cysteinate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Lysine Carboxymethyl Cysteinate do in cosmetics?
Lysine Carboxymethyl Cysteinate functions as: Skin conditioning, hair waving/straightening (reduces disulfide bonds), humectant. It is classified as a cosmetic ingredient in our database. CAS number: Not widely published [^1_4].
What is the Margin of Safety for Lysine Carboxymethyl Cysteinate?
not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
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Related Ingredients
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