Cysteine

INCI: CYSTEINE

✅ Low Risk

Key Facts

CAS Number
52-90-4
Category
amino acid
Risk Level
low
Common Allergen
No
Found In
hair treatment

Is Cysteine safe in cosmetics?

Cysteine is rated low risk in cosmetic products. It is not classified as a common allergen and is generally well-tolerated by most skin types. Commonly found in hair treatment.

What is Cysteine?

Cysteine is a amino_acid commonly used in cosmetic and personal care products. It is generally considered safe at recommended concentrations.

Allergy & Safety Information

Cysteine is considered safe for cosmetic use.

Frequently Asked Questions

Is Cysteine safe?

Yes, well-tolerated by most skin types.

What does Cysteine do?

Functions as a amino_acid in formulations.

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