SNAP-8 is the "big sibling" of Argireline. It's a slightly longer peptide used in serums and eye products that target the look of expression lines. It's still uncommon in Australian skincare, which makes it a favourite with DIY formulators.
What is SNAP-8?
SNAP-8 is the trade name for acetyl octapeptide-3 (INCI, CAS 868844-74-0). It's a synthetic eight-amino-acid peptide, built by extending the Argireline sequence by two amino acids. As a raw material, it's a white, water-soluble powder that suits water-based serums and gels.
As with Argireline, retail products usually list SNAP-8 as a percentage of a dilute trade solution (for example, "SNAP-8 10%"). That works out to roughly 0.005% pure peptide. Our powder is the pure peptide.
How is it used in cosmetics?
Formulators add SNAP-8 to leave-on serums, eye gels and rollers aimed at the forehead, the frown area and the outer eyes, where lines show most with expression. It's often paired with Argireline or other "expression-line" peptides, and with hydrators that plump the skin surface, such as hyaluronic acid.
- Typical use level: 0.005–0.05% pure peptide.
- pH: 5.0–6.5.
- Pairs well with: Argireline, palmitoyl pentapeptide-4, hyaluronic acid, caffeine (in eye products) and panthenol.
- Avoid: heat over 40 °C during mixing, and applying it at the same time as very low-pH acids.
SNAP-8 vs Argireline
Ingredient makers developed SNAP-8 as a follow-up to Argireline and present it as a stronger performer in their own tests. There are few independent comparisons, though, so think of the two as close cousins rather than as "better" and "worse". Many people use both together.
DIY serum: mixing a 30 mL bottle
The SNAP-8 DIY Serum Kit contains 15 mg SNAP-8 powder (0.05% in 30 mL, supplied as a 15 mg sachet), two 15 mL amber jars of hyaluronic acid base (20 mL in total), 5 mL glycerin, 0.5 mL preservative, an empty 30 mL amber glass dropper bottle with pipette, a 5 mL syringe, pH strips and a how-to card (makes 30 mL). The powder is pre-weighed, so there's no weighing. You mix it with the glycerin, HA base and preservative, then check the pH.
- Wash hands. Wipe the bench, bottle and syringe with 70% isopropyl alcohol and let air-dry.
- Empty the peptide sachet into the 30 mL dropper bottle (tap the sachet so no powder is left).
- Add the 5 mL glycerin and swirl for 30 seconds.
- Add the 20 mL hyaluronic acid base with the syringe. Cap and roll gently for 1–2 minutes until clear. Do not shake hard.
- Add the 0.3 mL preservative (1%) and roll again.
- Check pH with a strip: aim for 5.0–6.5. Write the date made on the bottle label.
- Keep the bottle in the fridge and use within 8 weeks.
Storage
Store the powder sealed and in the fridge with its desiccant, and warm the jar to room temperature before opening. Keep mixed serum cold and away from light, and use it within about 8 weeks. Throw it out if it looks cloudy or smells off.
Patch testing
Test a small amount on your inner forearm for 2–3 days before using it on your face. Stop if you get redness, itching or stinging. Don't apply it to broken or irritated skin, or inside the eye area. If you're pregnant or breastfeeding, or have a skin condition, ask a health professional first.
What the evidence says (honest summary)
Most of the data on SNAP-8 comes from the ingredient manufacturer's own studies. These report less visible expression lines and smoother-looking skin after about 4 weeks of twice-daily use, compared with a placebo. Independent, peer-reviewed human trials are limited. Expect subtle, gradual changes in appearance that last only while you keep using it. SNAP-8 is a cosmetic ingredient and isn't comparable to any medical or clinic procedure.
FAQ
Can I combine SNAP-8 and Argireline in one serum?
Yes. A common split is 0.025% of each. Keep the total peptide content around 0.05%.
Will it sting?
Peptides themselves are generally mild. Stinging usually comes from the base, the pH or broken skin. Patch test to be sure.
Morning or night?
Either works. In the morning, follow it with sunscreen, which does more for the look of your skin over time than any single serum.
Why is SNAP-8 more expensive?
It's a longer peptide, so it costs more to make, and fewer suppliers produce it.
Is it for injection?
No. It's for topical cosmetic use only.
Every peptide we use is independently lab-tested for identity and purity before it goes into our creams and serums. For laboratory research materials, see Ultimate Peps; lab testing is available from QLD Analytical (Queensland, Australia).
For topical cosmetic use only. Not intended to diagnose, treat, cure or prevent any disease. Individual results vary. — The Ultimate Performance Team