Ingredient
sh-polypeptide-121
Low risk
FunctionPeptide
What it is
sh-Polypeptide-121 is a biotech-derived signal peptide produced by fermentation, used for skin-conditioning and firming-style claims.
What it does
It is marketed to support firmer, smoother-looking skin as part of anti-ageing peptide blends. These are cosmetic, appearance-level claims rather than proven effects.
Typical use
Found at very low levels in serums and firming treatments, usually with other peptides.
Safety
Graded low risk as a cosmetic peptide with no notable irritation history at use levels. Patch-test if your skin is reactive. This is general information, not medical advice.
Why we grade it Low: Low risk - cosmetic peptide with no notable irritation history at use levels.
Cross-reference
Found in these DHALIORA products
Found in 0 DHALIORA products
Not currently in any DHALIORA product.
How grades are set — Risk reflects our own reading of publicly available safety data, an EWG-style reading shown at the worst-case grade we've assigned this ingredient across products. It isn't a third party's proprietary score, and it isn't medical advice. Always read the packaging and patch-test where indicated.
← Back to the ingredient glossary