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Acetyl Tetrapeptide-5

A humectant peptide ingredient listed in EU cosmetic databases—often used in eyes formulas.

Close-up healthy skin
Reading ingredients on a skincare label

Spotted this on a label?

Acetyl Tetrapeptide-5

That’s the INCI name—the official way it appears on the back of your serum or cream. Same ingredient, different marketing names.

Structure (cute edition)

Simplified amino acid chain for Acetyl Tetrapeptide-5
2D chemical structure from PubChem ✨ real molecule sketch

Four amino acids—often pitched for eye-area puffiness (Eyeseryl).

INCI: ACETYL TETRAPEPTIDE-5 · ~4 amino acids in our simplified view

Research & public records

Counts and links from public databases (PubMed, ClinicalTrials.gov, Wikidata, NIH drug nomenclature). Educational only — not medical advice.

Knowledge base: chemical compound

ChEMBL: SULFAMETHOXYPYRIDAZINE ACETYL · max phase -1.0

What brands say it does

Acetyl Tetrapeptide-5 EU CosIng describes it as: Acetyl Tetrapeptide-5 is product obtained by the acetylation of Tetrapeptide-5.. In skin care it is typically a supporting active—meant to complement hydrators and antioxidants rather than work alone.

Where you’ll find it

Eye creams, depuffing gels, and brightening treatments. Look for Acetyl Tetrapeptide-5 on the INCI list.

Other names you might see

Eyeseryl

Compare with similar peptides

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Educational only—not medical advice. Results vary; talk to a dermatologist for personal recommendations.