What it is
Sr-Hydrozoan Polypeptide-1 is a recombinant polypeptide produced through biotechnology, with a sequence based on a protein associated with hydrozoan marine organisms. The 'sr-' prefix indicates a synthetically produced recombinant protein. In cosmetics it is used as a conditioning ingredient intended to support a smooth, well-cared-for skin feel.
Safety & warnings
As a purified recombinant peptide it is generally well tolerated. It is not associated with comedogenicity. As with any peptide ingredient, sensitivity is uncommon but possible in predisposed individuals.
Origin & sourcing
Produced by biotechnology as a recombinant protein, rather than harvested directly from a natural source.
Questions everyone asks
What does the 'sr-' prefix mean?
It indicates a synthetically produced recombinant protein, made by biotechnology rather than extracted from an organism.
What does this peptide do in a sunscreen?
It is included as a skin-conditioning ingredient and is not a UV filter.