Amidinocysteinyl Hydrolyzed Keratin
A cosmetic ingredient used as astringent, film forming, hair conditioning in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Amidinocysteinyl Hydrolyzed Keratin is the product obtained by the reaction of Amidinocysteine and Hydrolyzed Keratin.
What does it do?
Amidinocysteinyl Hydrolyzed Keratin is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Astringent
tightens or contracts skin tissue and pores, often used in toners and after-shave products
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Film forming
forms a thin continuous film on skin, hair, or nails — used in long-wear makeup, sunscreens, and hairsprays
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Hair conditioning
improves the appearance, feel, and manageability of hair
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Hair waving or straightening
permanently changes the shape of hair through chemical reduction and re-oxidation of the hair's disulfide bonds
EU regulatory status
Amidinocysteinyl Hydrolyzed Keratin is allowed for use in cosmetic products in the European Union under Regulation 1223/2009. It is not subject to a specific Annex restriction at the time of writing.
Frequently asked questions
What is Amidinocysteinyl Hydrolyzed Keratin?
Amidinocysteinyl Hydrolyzed Keratin is a cosmetic ingredient catalogued in the EU CosIng database. Amidinocysteinyl Hydrolyzed Keratin is the product obtained by the reaction of Amidinocysteine and Hydrolyzed Keratin.
Is Amidinocysteinyl Hydrolyzed Keratin allowed in cosmetics in the EU?
Yes. Amidinocysteinyl Hydrolyzed Keratin is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Amidinocysteinyl Hydrolyzed Keratin do in cosmetic products?
Amidinocysteinyl Hydrolyzed Keratin is declared in the EU cosmetic ingredient inventory with these functions: astringent, film forming, hair conditioning, hair waving or straightening.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 30/04/2020