Tripeptide-131 Hcl
A cosmetic ingredient used as antioxidant, binding, film forming in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Tripeptide-131 HCl is the hydrochloride salt of Tripeptide-131.
What does it do?
Tripeptide-131 Hcl is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Antioxidant
neutralises free radicals to slow oxidative damage to the formulation or skin
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Binding
holds the components of a formulation together, especially in pressed powders and compact makeup
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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
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Skin protecting
helps shield skin from external environmental factors
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Skin conditioning - miscellaneous
improves skin condition through mechanisms not classified under the more specific emollient or humectant subcategories
EU regulatory status
Tripeptide-131 Hcl 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-131 Hcl?
Tripeptide-131 Hcl is a cosmetic ingredient catalogued in the EU CosIng database. Tripeptide-131 HCl is the hydrochloride salt of Tripeptide-131.
Is Tripeptide-131 Hcl allowed in cosmetics in the EU?
Yes. Tripeptide-131 Hcl is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Tripeptide-131 Hcl do in cosmetic products?
Tripeptide-131 Hcl is declared in the EU cosmetic ingredient inventory with these functions: antioxidant, binding, film forming, hair conditioning, hair waving or straightening, skin protecting, skin conditioning - miscellaneous.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 30/04/2025