Tripeptide-145
A cosmetic ingredient used as absorbent, antioxidant in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Tripeptide-145 is the synthetic peptide consisting of arginine, cysteine and serine.
What does it do?
Tripeptide-145 is listed in the EU cosmetic ingredient inventory with the following declared functions:
-
Absorbent
takes up water-based or oil-based substances
-
Antioxidant
neutralises free radicals to slow oxidative damage to the formulation or skin
EU regulatory status
Tripeptide-145 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 Tripeptide-145?
Tripeptide-145 is a cosmetic ingredient catalogued in the EU CosIng database. Tripeptide-145 is the synthetic peptide consisting of arginine, cysteine and serine.
Is Tripeptide-145 allowed in cosmetics in the EU?
Yes. Tripeptide-145 is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Tripeptide-145 do in cosmetic products?
Tripeptide-145 is declared in the EU cosmetic ingredient inventory with these functions: absorbent, antioxidant.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 25/06/2026