Acetyl Hexapeptide-8 is one of the most quoted cosmetic peptides and one of the easiest to compare badly. The same INCI name is attached to neat powder, to solutions at very different concentrations, and to branded materials with their own specifications, so two honest offers can differ by an order of magnitude per kilogram without either being wrong. This page covers the identity and naming layer, how to put offers on a comparable basis, and what the documents do and do not demonstrate.
One INCI name, several names in the market
The INCI name is Acetyl Hexapeptide-8, CAS 616204-22-9. The molecule is an acetylated, amidated hexapeptide, sequence Ac-Glu-Glu-Met-Gln-Arg-Arg-NH2, molecular formula C34H60N14O12S, molecular weight approximately 889.
Three naming points matter commercially:
- Acetyl Hexapeptide-3 is the former INCI name for the same substance. Older documents and formulas still carry it, and it is not a different ingredient.
- Argireline® is a registered trademark of Lubrizol / Lipotec for their branded material. It is not a synonym you may use freely on your own product, and we neither supply that branded material nor represent its owner.
- The INCI name is what belongs on an ingredient declaration and a purchase specification. A trade name identifies a specific company's product, which is a different statement.
Why two honest quotations differ tenfold
Neat Acetyl Hexapeptide-8 is a white to off-white, water-soluble powder. It also reaches the market as pre-made aqueous solutions, and a solution quoted per kilogram is mostly water by weight. Neither form is better; they serve different manufacturing setups. The mistake is comparing a price against a form that has not been stated.
Ask every supplier for the same two facts before the price: the material form, and the active peptide basis — how much peptide is in what you receive, and what that figure was measured against. An HPLC purity figure describes the detected material; in a solution or blend it does not tell you the active content of the commercial product. Where a report shows purity but no content determination, that is a gap to note, not a number to infer.
Putting offers on one line
This is the one comparison worth tabulating, because the columns are exactly where offers stop being comparable:
| What to capture | Why it decides the comparison |
|---|---|
| Material form | Neat powder, stated-percentage solution, or blend. Fixes what the price is per unit of. |
| Active peptide basis | Peptide content in the material as supplied. The only figure that normalises price. |
| Test method behind each figure | Identity by LC-MS, purity by HPLC, content by assay against a reference standard. A percentage without a method is not a result. |
| Batch specificity of the COA | A certificate tied to your batch, versus one sheet reused across shipments. |
| Pack size and packaging | Decides minimum commitment and how much you must buy to run a real pilot. |
| MOQ and lead time | Quoted per project rather than assumed. Confirm both in writing against your quantity and destination. |
| Document set | COA, SDS/MSDS, specification sheet, and what is available on request. |
What the documents prove — and what they don't
A COA supports identity, purity and, where included, content for one batch. It does not establish that the material suits your formula. It also does not clear a claim. Use-level assessment is your own work, based on supplier technical data and validated on the finished formula in its real base and packaging; no supplier figure substitutes for that, and no supplier figure clears the wording that ends up on a carton.
It is worth separating two conversations that tend to merge in sales material: what the market says this peptide does, and what a specification can actually demonstrate. A certificate speaks to the second only. For the underlying documentation logic see the COA, HPLC and LC-MS review guide and how purity affects manufacturing decisions.
Sample batch and commercial batch
A sample that performs is evidence about that sample. Before scaling, confirm that the commercial batch will be produced to the same written specification, that you will be told if anything in it changes, and that the certificate you receive at volume carries the same parameters as the one you evaluated. Where a hero product depends on this material, that consistency question deserves its own review; we cover it in the hero-SKU supply-risk page.
What we can support
We supply Acetyl Hexapeptide-8 with COA and SDS/MSDS documentation, a specification sheet with purity information, samples for formulation evaluation, and bulk quotation against a stated quantity and destination market. OEM/ODM discussion is available where a project calls for it. Current specification scope is on the Acetyl Hexapeptide-8 material page.
Frequently Asked Questions
Is Acetyl Hexapeptide-8 the same as Acetyl Hexapeptide-3?
Yes. Acetyl Hexapeptide-3 is the former INCI name for the same substance, CAS 616204-22-9. Older specifications and formulas may still use it.
Is Argireline the same as Acetyl Hexapeptide-8?
Argireline® is a registered trademark of Lubrizol / Lipotec for their branded material containing this peptide. Acetyl Hexapeptide-8 is the INCI ingredient. We supply the INCI ingredient and do not represent the trademark owner.
Why is one supplier's price a fraction of another's?
Most often because one is quoting neat powder and the other a solution, or because the purity figure quoted refers to the peptide input rather than the delivered material. Establish material form and active peptide basis first; the prices usually converge.
What documents should I request for an initial evaluation?
A batch-specific COA, SDS/MSDS, and the specification sheet, with the test methods stated. Ask whether a content determination is included alongside HPLC purity.