Two peptides dominate the "expression-line" category in cosmetic anti-wrinkle claims: Argireline (Acetyl Hexapeptide-8, CAS 616204-22-9) and SNAP-8 (Acetyl Octapeptide-3, CAS 868844-74-0). Buyers often ask which to stock. Here is a practical comparison.
The short version
- Argireline is the hexapeptide — the original, most widely recognised name.
- SNAP-8 is the octapeptide — a longer sequence, often marketed as an extended, next-generation option.
- Both are water-soluble powders (also sold as trade solutions), used in the water phase, added during cool-down at a mild pH.
Formulation
Handling is essentially the same: add late and cool, keep the pH mild, avoid prolonged high heat, and validate stability and preservative efficacy. Both are commonly used in serums, eye products and creams.
How to choose
- Claim and marketing: Argireline carries the strongest name recognition; SNAP-8 lets a brand claim a longer, "advanced" peptide.
- Cost and availability: compare per-kg cost and lead time from your supplier for both.
- Stacking: some brands use both together, or alongside palmitoyl peptides, to build a multi-peptide story.
Buyer's takeaway
There is no universally "better" choice — it depends on your claim strategy, formula and budget. Order both as samples, run your bench tests, and let your marketing and cost picture decide.
WYOO supplies both Acetyl Hexapeptide-8 and Acetyl Octapeptide-3, cosmetic grade, with COA and MSDS on every batch and MOQ from 1 kg. Request samples of both to compare.