Acetyl Tetrapeptide-5: what it is in skincare
⚡ Quick answer: A peptide often used around the eyes that helps the area look less puffy and smoother.
A peptide often used around the eyes that helps the area look less puffy and smoother.
What it does
Function: peptide (de-puffing). Peptides are signal ingredients formulated to support a firmer, bouncier-looking complexion — a fast-growing K-beauty category.
How to spot it on a label
On a Korean product's INCI list, look for Acetyl Tetrapeptide-5. Ingredients are listed high-to-low by amount, so its position hints at how much is in the formula. See all peptides →
Explore the full K-beauty hub →Related
Copper Peptide (GHK-Cu)Palmitoyl Tripeptide-1Palmitoyl Tripeptide-5Matrixyl (Pal-KTTKS)Argireline (Acetyl Hexapeptide-8)SYN-AKE Peptide✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed 2026-06-21.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.