Ingredient：CYSTEINE
Safety Assessment of CYSTEINE Ingredients as Used in Cosmetics
Jincong Li
CosIng, CIR
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The ZhuangQiYi Platform provides comprehensive details on the cosmetic ingredient "CYSTEINE", including multilingual nomenclature, CAS number, safe usage concentrations, efficacy, regulatory status, and related information. It integrates data from over 30,000 cosmetic ingredients sourced from authoritative references like CosIng and CIR, with continuous updates to reflect the latest global regulatory developments. All information is for reference purposes only.
| INCI name | CYSTEINE |
| 中文名称 | 半胱氨酸 |
| Japan name | システイン |
| Korean name | 시스테인 |
| INN name | cysteine |
| Chem/IUPAC Name | L-Cysteine |
| PCPC No | 641 |
| COSING Ref No | 75422 |
| IECIC No | 01205 |
| CAS No | 52-90-4 / 3374-22-9 |
| EC Restriction | |
| Function |
ANTIOXIDANT:
Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
ANTISTATIC:
Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
FRAGRANCE:
Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.
HAIR CONDITIONING:
Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
HAIR WAVING OR STRAIGHTENING:
Modifying the chemical structure of the hair, allowing it to be set in the style required (permanent waves or hair straightening).
REDUCING:
Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).
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| Included | NMPA Announcement on Issuing the Catalogue of Used Cosmetic Raw Materials (Edition 2021) |
| China/Safe Value |
keywords:
妆企易
CosIng
CIR
CYSTEINE
半胱氨酸
システイン
시스테인
52-90-4 / 3374-22-9
Cosmetic Ingredient Review (CIR)