Snap-8 vs Argireline

Both of these are aimed at the lines you make with your face, the forehead creases from raised eyebrows and the crow's feet from years of laughing. Snap-8 is the newer one with the research vial and the "topical Botox" reputation. Argireline is the older one, already in a long list of drugstore and department-store serums.

They're family. Lipotec, a Spanish ingredient company, made Argireline first, six amino acids meant to quiet the signal that tells a facial muscle to tighten, so the line it keeps folding into softens. Snap-8 is the same peptide with two more amino acids on the end, which the maker says makes it a bit more active. Older labels call Argireline acetyl hexapeptide-3, and newer ones acetyl hexapeptide-8, and it's the same ingredient. Snap-8 shows up on ingredient lists as acetyl octapeptide-3, so that's the name to look for when the front of a box only says peptide complex. Think of it as the same key with the teeth filed a little closer to the lock.

Where they really part is the evidence. Argireline has been tested by researchers outside the company, on real faces against a plain cream with no peptide in it, and lines got shallower over four weeks of twice-daily use. Snap-8's numbers all come from Lipotec's own tests, which put it slightly ahead of Argireline, with no placebo group and no outside repeat. Neither has been compared with Botox in a published study, and both share the same open question, how much gets through the skin. In one lab test on donated skin, less than 1% of the Argireline applied made it through. Our skin and beauty page lists the other peptides people weigh for skin, and GHK-Cu vs Matrixyl covers the two collagen ones.

Where these come from: the Snap-8 solution strength and the 3 to 10% range are the ingredient supplier's guidance, and its twice-a-day, four-week pattern is from the maker's own test. The Argireline strength and timing come from the published skin studies, one of which used 10% of a 0.05% solution. The finished-product strengths are our math from those figures. Neither has a dosage page, because neither is used by injection.

The research powder changes the math. A 10 mg vial of Snap-8 mixed into 10 mL of serum is 0.1% peptide, about twenty times the 0.005% at the top of the supplier's range, and nobody has tested Snap-8 at that strength on skin.

Plenty of serums carry both, often next to Matrixyl or other peptides, because cosmetic chemists treat them as teammates aimed at the same lines rather than rivals. No study has tested the pair, so using both rests on formulation and on what people describe, not on a trial.

Since they work the same way, there's no reason to split them across the day the way people do with copper peptides and acids. One serum with both, applied morning and night, is the usual routine. If you're layering separate products, the skin-care order is thinnest to thickest, and one new bottle at a time, so if your forehead objects you know which one to blame. Give it the four weeks the tests ran before you judge it, checking in the same mirror and the same light each time.

1. Glow Aminos10 mg · $21.45 $2.15/mg
2. Flawless Compounds10 mg · $21.45 $2.15/mg
3. Alpha Labs10 mg · $23.09 $2.31/mg
4. Skye Peptides20 mg · $54.00 $2.70/mg
5. Peptide Crafters10 mg · $27.00 $2.70/mg

Compare Snap-8 in the app. We track the research vials, not serums, and Argireline isn't sold that way by the vendors we follow, so it has no price card here. We track 20 vendors for Snap-8. Compare the real price per milligram rather than the sticker on one vial, and look for independent purity and identity testing for the batch you're buying. Every vendor on PPL carries a confidence label, from High confidence to New vendor.

One vial goes a long way. At 0.005%, the top of the supplier's range, a 10 mg vial holds enough peptide for about 200 mL of serum, and at the low end of 0.0015% about 670 mL. That's more than six 30 mL bottles even at the strong end, so one vial is usually all anyone needs, and buying more mostly buys powder you won't get to.

If you're buying a finished serum instead, the ingredient list won't tell you much about strength. US labels list ingredients above 1% in order of amount, but anything at 1% or less can go in any order, and peptides at these strengths sit far below that line. A brand that states its peptide percentage is telling you more than most, and one that names Snap-8 or Argireline high on the front of the box is mostly telling you what it wants you to notice.

Snap-8: as an ingredient in finished products, it's listed in the EU's cosmetic ingredient database with no restrictions, and the US cosmetic safety panel hasn't reviewed it. A serum mixed at home from a research vial usually runs well above any tested strength, and there's no data on irritation at those levels, so a patch test on the inside of the arm comes first. There's no data on injecting it at all.

Argireline: the US cosmetic safety panel reviewed it and found it safe in products up to 0.005%, the top of the usual range, and said there wasn't enough data to judge anything stronger. The published skin studies reported no irritation.

Neither has been studied in pregnancy or breastfeeding, and redness or stinging that lasts is the cue to stop.

The serums are cosmetics, and a Snap-8 vial is sold for research, at strengths nobody has tested on skin. You knew that, it's why you're reading this and not the label.