Sr-Hymenobacter Polypeptide-1
A cosmetic ingredient used as antioxidant in skincare, haircare, and personal-care products sold in the European Union.
What is it?
sr-Hymenobacter Polypeptide-1 is a single chain recombinant protein produced by fermentation in E. coli. The starting gene is synthesized to be identical to the gene which codes for Deoxyribodipyrimidine Photo-lyase derived from Hymenobacter sp. UV11. The parent protein contains 437 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-Hymenobacter Polypeptide-1 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
EU regulatory status
Sr-Hymenobacter Polypeptide-1 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-Hymenobacter Polypeptide-1?
Sr-Hymenobacter Polypeptide-1 is a cosmetic ingredient catalogued in the EU CosIng database. sr-Hymenobacter Polypeptide-1 is a single chain recombinant protein produced by fermentation in E. coli. The starting gene is synthesized to be identical to the gene which codes for Deoxyribodipyrimidine Photo-lyase derived from Hymenobacter sp. UV11. The parent protein contains 437 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.
Is Sr-Hymenobacter Polypeptide-1 allowed in cosmetics in the EU?
Yes. Sr-Hymenobacter Polypeptide-1 is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Sr-Hymenobacter Polypeptide-1 do in cosmetic products?
Sr-Hymenobacter Polypeptide-1 is declared in the EU cosmetic ingredient inventory with these functions: antioxidant.
What is the CAS number of Sr-Hymenobacter Polypeptide-1?
The CAS (Chemical Abstracts Service) number for Sr-Hymenobacter Polypeptide-1 is 37290-70-3.
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Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 25/06/2026