Hexapeptide-8, explained

If you have read an eye-cream label lately, you have probably seen acetyl hexapeptide-8, often sold under the trade name Argireline. It is one of the best-known peptides in skincare, and for good reason: it was designed from the start to target expression lines, and it has published human studies behind it. Here is what it is, what the research shows and how to get the most from it.

What it is

Acetyl hexapeptide-8 is a short chain of six amino acids (Ac-EEMQRR-NH₂). Researchers created it through a rational design program, looking for a gentle, topical way to soften the look of expression lines without injections.¹ Researchers who studied its skin penetration identify acetyl hexapeptide-8 by the same six-amino-acid sequence.²

How it is designed to work

Expression lines, such as crow's feet, form where the same small facial movements repeat thousands of times a day. Acetyl hexapeptide-8 was modeled on part of a protein called SNAP-25, which nerve endings use to release the signals that tell muscles to contract.³

In laboratory tests, the peptide interfered with the protein complex involved in releasing those signals. The researchers stressed that its effect is much milder than that of injectable neurotoxins.¹ That is the point: it is a cosmetic ingredient that works on the look of expression lines, for a softer, smoother appearance.

What the studies show

• The original study: healthy women who applied a cream with 10% hexapeptide for 30 days showed a reduction in wrinkle depth of up to 30%, measured by skin-surface analysis.¹
• A randomized, placebo-controlled study: 60 adults applied argireline or a placebo around the eyes twice a day for four weeks. In the subjective assessment, total anti-wrinkle efficacy was 48.9% in the argireline group and 0% in the placebo group. Skin-replica measurements of roughness also decreased only in the argireline group.³
• A comprehensive review of topical peptides placed acetyl hexapeptide-8 in the "neurotransmitter-inhibitor" peptide group and reviewed the controlled studies on it.⁴

Results depend on the formula, the concentration and how consistently it is used. These studies used their own test formulas.

Where it stays in the skin

In a laboratory study, researchers applied a cream with 10% acetyl hexapeptide-8 to skin samples. Most of the peptide stayed on the surface, and the small amount that penetrated stayed mainly in the outermost layer of the skin. None reached the deeper layer (the dermis).² In other lab work, water-rich emulsions delivered more of the peptide into skin than oil-rich ones did.⁵

For you, this means two things. It is an ingredient that works in the upper layers of the skin, and the researchers noted that this kind of data helps in evaluating the safety of peptide cosmetics.² It also means the formula and consistency matter: apply it to clean skin, gently pat it in, and use it regularly.

Why we recommend it for the eye area

The skin around the eyes is thin and moves constantly, so it is often the first place fine lines show. Acetyl hexapeptide-8 is a smart choice there because:

• it targets the look of expression lines specifically;
• it has published, placebo-controlled human data around the eyes;
• it is gentle and needle-free, and fits easily into a morning or evening routine.

Where to find it in our collection

Instant Eye Lift by Dermagenix, Eye care. Its ingredient list includes acetyl hexapeptide-8 together with magnesium aluminum silicate and sodium silicate, mineral ingredients that Dermagenix uses to create a visible lifting effect on application. Think of it as two-in-one: the minerals give the instant, temporary effect, and the peptide is the part designed for continued use. Tap a small amount around the under-eye and outer corners. The product listing recommends use once a week, at night.

For every day: Intensive Recovery Eye Cream by Dermagenix does not contain hexapeptide-8, but it pairs well with Instant Eye Lift. Its peptide complex (tripeptide-1, tripeptide-29 and copper tripeptide-1), hyaluronic acid, ceramides and avocado extract care for the eye contour morning and evening, between your weekly Instant Eye Lift nights.

A related peptide: our pH Balance Toner by Dermagenix contains acetyl octapeptide-3, a longer peptide from a similar family. Published research on it in toners is limited, so we recommend the toner for what it does well: refreshing skin and preparing it for your eye care.

What to expect

• Right away: with Instant Eye Lift, the mineral ingredients give a smoother, tighter-looking eye area soon after application. This effect is temporary.
• Weeks 2 to 4: in the studies above, changes in the look of fine lines were measured after four weeks of regular use.^1,3
• Ongoing: peptide benefits are tied to continued use, so make it a habit. Pair it with daily sunscreen to protect the delicate eye area.

Our tip

Apply eye care to clean, dry skin after toner, and let it absorb before makeup. On device evenings, your Derma Tech session comes first, then your eye care.

Shop Instant Eye Lift

This article is for general information only. These products are cosmetics intended to improve the appearance of skin. They are not intended to diagnose, treat, cure or prevent any disease, and they are not a substitute for medical procedures. Studies cited used their own formulas, and individual results vary. Patch test before first use, avoid contact with the eyes, and stop use if irritation occurs.

Sources

1. Blanes-Mira C, Clemente J, Jodas G, et al. A synthetic hexapeptide (Argireline) with antiwrinkle activity. Int J Cosmet Sci. 2002;24(5):303-310. doi:10.1046/j.1467-2494.2002.00153.x · PubMed 18498523
2. Kraeling ME, Zhou W, Wang P, Ogunsola OA. In vitro skin penetration of acetyl hexapeptide-8 from a cosmetic formulation. Cutan Ocul Toxicol. 2015;34(1):46-52. doi:10.3109/15569527.2014.894521 · PubMed 24754410
3. Wang Y, Wang M, Xiao S, et al. The anti-wrinkle efficacy of argireline, a synthetic hexapeptide, in Chinese subjects: a randomized, placebo-controlled study. Am J Clin Dermatol. 2013;14(2):147-153. doi:10.1007/s40257-013-0009-9 · PubMed 23417317
4. Gorouhi F, Maibach HI. Role of topical peptides in preventing or treating aged skin. Int J Cosmet Sci. 2009;31(5):327-345. doi:10.1111/j.1468-2494.2009.00490.x · PubMed 19570099
5. Hoppel M, Reznicek G, Kählig H, et al. Topical delivery of acetyl hexapeptide-8 from different emulsions: influence of emulsion composition and internal structure. Eur J Pharm Sci. 2015;68:27-35. doi:10.1016/j.ejps.2014.12.006 · PubMed 25497319