Sr-(Polypeptide-166 Oligopeptide-178)
A cosmetic ingredient used as surfactant - emulsifying, film forming, skin protecting in skincare, haircare, and personal-care products sold in the European Union.
What is it?
sr-(Polypeptide-166 Oligopeptide-178) is a single chain recombinant peptide, produced by fermentation in Pichia pastoris. The starting gene is synthesized by the fusion of the gene from Polypeptide-166 and Oligopeptide-178. The fusion peptide contains 971 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
What does it do?
Sr-(Polypeptide-166 Oligopeptide-178) is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Surfactant - emulsifying
surfactant that forms and stabilises emulsions of oil and water — without it, creams and lotions would separate
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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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Skin protecting
helps shield skin from external environmental factors
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Viscosity controlling
adjusts the thickness or flow of a formulation
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Slip modifier
alters how a product spreads and feels on skin — typically making it glide more smoothly
EU regulatory status
Sr-(Polypeptide-166 Oligopeptide-178) 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 Sr-(Polypeptide-166 Oligopeptide-178)?
Sr-(Polypeptide-166 Oligopeptide-178) is a cosmetic ingredient catalogued in the EU CosIng database. sr-(Polypeptide-166 Oligopeptide-178) is a single chain recombinant peptide, produced by fermentation in Pichia pastoris. The starting gene is synthesized by the fusion of the gene from Polypeptide-166 and Oligopeptide-178. The fusion peptide contains 971 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
Is Sr-(Polypeptide-166 Oligopeptide-178) allowed in cosmetics in the EU?
Yes. Sr-(Polypeptide-166 Oligopeptide-178) is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Sr-(Polypeptide-166 Oligopeptide-178) do in cosmetic products?
Sr-(Polypeptide-166 Oligopeptide-178) is declared in the EU cosmetic ingredient inventory with these functions: surfactant - emulsifying, film forming, skin protecting, viscosity controlling, slip modifier.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 08/08/2024