Snapshot
- Overview
- A peptide meant to smooth skin and improve firmness over time.
- Category
- Firming, Anti-aging, Tone/Texture
- Type
- Peptide
Acetyl Tetrapeptide-9
Acetyl Tetrapeptide-9 is a synthetic four-amino-acid peptide developed for topical skincare. Brands add it to firming and texture products to refine the look of skin structure, though supporting studies remain limited.
Like this ingredient?
Our take
Is Acetyl Tetrapeptide-9 a Good Ingredient?
This lands at Fair due to scarce independent clinical support; perceived firming and smoothing are usually modest. A minor risk of irritation or sensitization is possible, particularly for sensitive skin.
What it does
Skin Benefits
May smooth skin’s surface and improve the look of density and firmness over time. Evidence is modest, so visible changes are typically gradual.
Where you'll find it
Uses in Skincare & Cosmetics
Used in renewal essences, night creams, and treatment boosters targeting texture refinement and firmness. Sometimes included in concentrated ampoules for specific areas.
Before you use it
Safety
Typically low irritation potential, but patch testing is advisable for reactive skin due to possible redness or itching. No common regulatory restrictions are noted for standard cosmetic use.
Products with Acetyl Tetrapeptide-9
