Ingredient Library
Acetylated tetrapeptide formulated for the delicate eye area

Acetyl Tetrapeptide-5 Eye Serum

Also known as Acetyl Tetrapeptide-5, Eye Peptide

INCI name · Acetyl Tetrapeptide-5

A featherlight serum for the delicate eye area — used to help the under-eye look fresh, smooth, and less tired in appearance. For external cosmetic use only.

The skin around the eyes is the thinnest on the face, and it asks for a lighter hand. Acetyl Tetrapeptide-5 is the peptide our eye serum is built around — a small, acetyl-capped four-amino-acid peptide chosen specifically for this delicate zone.

This page is about the under-eye look and how to treat that area kindly. It makes no medical claim; it's a cosmetic serum for the appearance of the eye contour.

Used for the look of
4 appearance contexts · hover one to read the note. For external cosmetic use only.

A peptide sized for delicate skin

Acetyl Tetrapeptide-5 is a tetrapeptide — four amino acids — with an acetyl cap, kept in a featherlight base so it feels weightless on skin that can't tolerate anything heavy. The whole formula is designed around comfort in a zone where less is genuinely more.

That restraint is the point of an eye serum: a thin, gentle layer rather than a rich cream that can feel like too much around the eyes.

The under-eye look

Mornings can leave the under-eye looking tired and puffy in appearance. This serum is used to help that area look fresh, smooth, and more awake, patted on gently as part of a simple routine. It's about how the eye contour looks, not about any physiological change.

Because it's so light, it layers under an eye cream or your usual moisturizer without pilling.

Handling the eye area kindly

Around the eyes, technique matters as much as the formula. Use a fingertip to press — never drag — a small amount along the orbital bone, staying clear of the lash line and the eye itself. A little goes a long way.

How to use it

External use only. With a fingertip, gently press a small amount along the orbital bone morning and evening, staying clear of the immediate lash line and the eye itself. Avoid direct contact with the eyes; if the product gets into an eye, rinse with water. Patch-test on the inner arm before first use and discontinue if irritation occurs. Store cool and out of direct sun.

Common questions

What is the eye serum's key peptide?

Acetyl Tetrapeptide-5 — an acetyl-capped four-amino-acid peptide, kept in a featherlight base for the delicate eye area.

Can I use it with my expression-line peptides?

Yes. Many people use an eye serum around the orbital area and an Argireline- or SNAP-8-type serum across the forehead and outer eye. Keep the eye serum clear of the lash line.

How much should I use?

Very little — a small amount pressed gently along the orbital bone is plenty. The eye area rewards a light touch.


Browse cosmetics
Pairs beautifully with
Argireline (Acetyl Hexapeptide-8) ↗SNAP-8 (Acetyl Octapeptide-3) ↗Palmitoyl Tetrapeptide-7 ↗GHK-Cu Copper Serum ↗
Reference

This is a cosmetic ingredient profile. It describes the active and the appearance of skin — the look and feel — not a treatment, a claim of any effect, or a recommendation for a medical use. These products are cosmetics and are not intended to diagnose, treat, cure, or prevent any disease. For external cosmetic use only.