Cysteine HCl
✓ EU AllowedIdentification
CAS Number 52-89-1
EINECS / EC 200-157-7
CosIng Ref 75423
Chemical Name (2R)-2-amino-3-sulfanylpropanoic acid;hydrochloride
IUPAC Name —
Formula C3H8ClNO2S
Mol. Weight 157.62 g/mol
SMILES C(C(C(=O)O)N)S.Cl
InChIKey IFQSXNOEEPCSLW-DKWTVANSSA-N
Function & Classification
Primary Function Antioxidant
Secondary Functions HAIR CONDITIONING; HAIR WAVING OR STRAIGHTENING; REDUCING
Category Vitamins & Antioxidants
EU Regulatory Status
Safety Profile
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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