Acetyl Tetrapeptide-11 is a synthetic cosmetic peptide used primarily in skincare formulations, particularly products targeting skin firmness, elasticity, smoothness, and signs of aging.
Basic overview
- INCI name: Acetyl Tetrapeptide-11
- Type: Acetylated tetrapeptide
- Category: Cosmetic bioactive peptide / anti-aging peptide
- Structure: A short chain of four amino-acid residues with an acetyl group attached
- Typical applications: Anti-aging serums, creams, eye-care products, and firming formulations
- Primary cosmetic purpose: Supporting the appearance of firmer, smoother, more resilient skin
How does it work?
Acetyl Tetrapeptide-11 is designed to act as a signaling peptide in cosmetic formulations. Small peptides can interact with skin cells and extracellular-matrix-related pathways, potentially influencing processes associated with skin structure and aging.
Its proposed cosmetic benefits include:
- Improved skin firmness – may help support the appearance of more toned and firm skin.
- Better elasticity – intended to support skin’s elastic properties and reduce the appearance of laxity.
- Smoother skin texture – may help make fine lines and uneven texture appear less noticeable.
- Anti-aging support – used in formulations designed to address visible signs of chronological and photoaging.
- Skin-conditioning effects – can contribute to a smoother, more supple skin appearance.
Important distinction
Acetyl Tetrapeptide-11 should not be confused with Acetyl Tetrapeptide-5, Acetyl Tetrapeptide-9, or other tetrapeptides. Although they share a similar naming pattern, their amino-acid sequences, commercial positioning, and proposed biological activities can differ substantially.
Also, evidence for cosmetic peptides is often based on ingredient-supplier studies, in-vitro experiments, or small cosmetic trials, rather than large independent clinical trials. Therefore, claims about collagen production, wrinkle reduction, or tissue remodeling should be interpreted cautiously.
If you’re studying it for formulation or ingredient research, the next useful areas are its chemical structure, mechanism of action, benefits, recommended concentration, stability, formulation compatibility, and Acetyl Tetrapeptide-11 vs. Acetyl Tetrapeptide-9/5.