Is Tetrasodium Disuccinoyl Cystine safe in cosmetics?
Tetrasodium Disuccinoyl Cystine has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Tetrasodium Disuccinoyl Cystine
Also known as: L-Cystine, N,N'-bis(3-carboxy-1-oxopropyl)-, tetrasodium salt, l-Cystine, N,N'-bis(3-carboxy-1-oxopropyl)-, tetrasodium salt (9ci), Kerastim S
INCI: TETRASODIUM DISUCCINOYL CYSTINE
Tetrasodium Disuccinoyl Cystine (CAS 184830-08-8) is a cosmetic cosmetic ingredient functioning as Hair Conditioning. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 184830-08-8 →
Auto-generated CPSR Part A draft with source citations
Function
Hair Conditioning
Safety Rating
GOOD
Chemistry & Identifiers
IUPAC Name
tetrasodium;4-[[(1R)-1-carboxylato-2-[[(2R)-2-carboxylato-2-(3-carboxylatopropanoylamino)ethyl]disulfanyl]ethyl]amino]-4-oxobutanoate
InChIKey
DXMACSBQPUBPQE-CFACWHMASA-J
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted under general cosmetic ingredient provisions
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Tetrasodium Disuccinoyl Cystine.
Calculate MoS for your specific formulation with the MoS Calculator.
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Softener and conditioner
Expert Verdict
Expert safety assessment and concern-level summary for Tetrasodium Disuccinoyl Cystine.
Known Synonyms
L-Cystine, N,N'-bis(3-carboxy-1-oxopropyl)-, tetrasodium salt
l-Cystine, N,N'-bis(3-carboxy-1-oxopropyl)-, tetrasodium salt (9ci)
Kerastim S
Chemical Function
Softener and conditioner
Frequently Asked Questions
Is Tetrasodium Disuccinoyl Cystine allowed in the EU?
Tetrasodium Disuccinoyl Cystine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tetrasodium Disuccinoyl Cystine do in cosmetics?
Tetrasodium Disuccinoyl Cystine functions as: Hair Conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 184830-08-8.
Compliance Tools
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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