What it is
Sh-Polypeptide-3 belongs to a family of short peptides whose names begin with the "sh-" prefix, indicating they are produced biotechnologically by host organisms such as yeast or bacteria rather than extracted from human or animal tissue. In cosmetic formulas it is included at low concentrations for its skin-conditioning and signaling properties. It is typically delivered in water-based serums and emulsions.
Safety & warnings
Peptides of this type are generally well tolerated at the low use levels found in cosmetics. Specific allergen or comedogenicity concerns are not well characterized for this ingredient.
Origin & sourcing
Produced by biotechnology (recombinant fermentation in a microbial host), which is what the "sh-" prefix denotes, rather than extracted from animal sources.
Questions everyone asks
What does the "sh-" prefix mean?
It indicates a peptide produced through biotechnology in a host organism such as yeast or bacteria, rather than one extracted from animal or human tissue.
Is Sh-Polypeptide-3 a UV filter?
No. It is used as a conditioning and signaling agent and does not provide sun protection.