Sr-Hydrozoan Polypeptide-1 is a marine-origin cosmetic peptide made via biotechnology. In serums and creams, it targets a firmer, smoother-looking surface, but evidence is limited and outcomes depend strongly on concentration and formula.
A marine-derived peptide that may firm and smooth skin's look.
Category
Firming, Skin Conditioning, Tone/Texture
Type
Peptide
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Sr-Hydrozoan Polypeptide 1 a Good Ingredient?
It rates Fair because evidence for visible firming from this marine-derived peptide is limited and highly formula-dependent, so benefits may be subtle. There's also a small risk of sensitization, especially for those reactive to marine extracts or novel peptides.
What it does
Skin Benefits
It may help skin appear bouncier and more refined, giving a smoother look to fine lines, though evidence is limited, so results can be subtle and vary by formula.
Where you'll find it
Uses in Skincare & Cosmetics
It's found in lightweight essences, ampoules, and gel moisturizers aimed at visibly firming and texturizing the complexion.
Before you use it
Safety
It's generally well tolerated in leave-on products, but peptides and marine-derived materials can provoke irritation or allergic reactions in sensitive users. Patch test if you're prone to reactivity. No specific regulatory restrictions are commonly cited for this ingredient in cosmetics.