# AMIDINOCYSTEINYL HYDROLYZED KERATIN

URL: https://app.greenveil.ai/ingredients/ingredient_inci_amidinocysteinyl_hydrolyzed_keratin
Categories: beauty
Functions: Astringent, Hair conditioning, Hair waving or straightening, Film forming
Identifier: AMIDINOCYSTEINYL HYDROLYZED KERATIN

> AMIDINOCYSTEINYL HYDROLYZED KERATIN: Used in cosmetics as an astringent, a hair conditioner and a hair waving or straightening agent. Amidinocysteinyl Hydrolyzed Keratin is the product obtained by the reaction of Amidinocysteine and Hydrolyzed Keratin. Canonical ingredient record built from 1 public-source records. Compiled from 1 published data source.

## Safety assessment

- Chemical concern: not yet assessed
- Is it a concern? We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
- Rationale: Canonical ingredient record built from 1 public-source records.

## Regulatory status

- EU: Active — Amidinocysteinyl Hydrolyzed Keratin is the product obtained by the reaction of Amidinocysteine and Hydrolyzed Keratin.

## Expert safety opinions

- SCCS (EU Scientific Committee on Consumer Safety): no opinion on file.
- CIR (Cosmetic Ingredient Review (US expert panel)): no opinion on file.

## Data sources

- CosIng (updated 2026-09-23): https://ec.europa.eu/growth/tools-databases/cosing/details/98369

_Assessed by Greenveil._