Acetyl Tetrapeptide-11 is a lab-designed, water-soluble peptide used in topical formulas. It's included to improve the look of texture and firmness in mature skin, but the published evidence is limited and results can vary.
A peptide that may firm skin and refine its texture gradually.
Category
Firming, Tone/Texture, Anti-aging
Type
Peptide
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Acetyl Tetrapeptide-11 a Good Ingredient?
Rated Fair because evidence is mostly supplier-led with limited independent studies; it may improve the look of firmness but results can be inconsistent. Irritation risk is generally low, though some users may experience sensitivity to peptides or other formula components.
What it does
Skin Benefits
May help skin feel firmer and look more refined with a smoother surface; independent support is limited so improvements may be modest.
Where you'll find it
Uses in Skincare & Cosmetics
Often featured in firming serums, neck creams, and eye-area treatments aimed at visible slackness.
Before you use it
Safety
Generally low irritation potential, but mild stinging or redness can occur on sensitive or compromised skin. Patch test if prone to reactions; no specific regulatory restrictions are commonly cited.