Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine)
A cosmetic ingredient used as film forming, hair conditioning, hair fixing in skincare, haircare, and personal-care products sold in the European Union.
What is it?
sr-(Escherichia Coli Extract/sh-Polypeptide-138 sh-Polypeptide-50 Leucyl sh-Polypeptide-50 Arginine) is a single chain recombinant peptide, produced by fermentation in E. coli, where the final product contains proteins from the E. coli host. The starting gene is synthesized by the fusion of the gene from sh-Polypeptide-138, sh-Polypeptide-50, Leucine, sh-Polypeptide-50, and Arginine. The fusion peptide contains 39 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-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) is listed in the EU cosmetic ingredient inventory with the following declared functions:
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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 fixing
holds hair in a desired style, typically through a flexible film coating each strand
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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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Adhesive
binds materials together — used in long-wear cosmetics like false lashes and certain eye makeup
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Surface modifier
alters the surface properties of solid particles (e.g. pigments) so they disperse better in the formulation
EU regulatory status
Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) 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-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine)?
Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) is a cosmetic ingredient catalogued in the EU CosIng database. sr-(Escherichia Coli Extract/sh-Polypeptide-138 sh-Polypeptide-50 Leucyl sh-Polypeptide-50 Arginine) is a single chain recombinant peptide, produced by fermentation in E. coli, where the final product contains proteins from the E. coli host. The starting gene is synthesized by the fusion of the gene from sh-Polypeptide-138, sh-Polypeptide-50, Leucine, sh-Polypeptide-50, and Arginine. The fusion peptide contains 39 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
Is Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) allowed in cosmetics in the EU?
Yes. Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) do in cosmetic products?
Sr-(Escherichia Coli Extract/sh-Polypeptide-138 Sh-Polypeptide-50 Leucyl Sh-Polypeptide-50 Arginine) is declared in the EU cosmetic ingredient inventory with these functions: film forming, hair conditioning, hair fixing, hair waving or straightening, adhesive, surface modifier.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 25/06/2024