What SNAP-8 is
SNAP-8 is an eight-amino-acid extension of Argireline, a fragment of the SNARE-complex protein SNAP-25, marketed as a topical botox-alternative that damps the muscle-contraction signaling behind expression lines. The supporting evidence is manufacturer in-vitro work and small cosmetic studies, not clinical trials. It is applied to skin, never injected; it appears in this reference because it ships as the same lyophilized vials as everything else and the reconstitution math is identical.
What we do not know
- The supporting evidence is manufacturer in-vitro work and small cosmetic studies, not independent clinical trials.
- It is a topical ingredient. There is no evidence of any kind for injecting it, which is the context the reconstitution math on this page usually implies.
- Effect sizes in the cosmetic literature are measured against untreated skin over weeks, with the usual difficulty of blinding a wrinkle assessment.
Reconstitution math
Concentration is everything: the same 10 mg vial gives a different draw for every amount of bacteriostatic water you add. The table uses the common 2 mL setup for each vial size, which puts every unit on a U-100 insulin syringe at 50 mcg for the default vial. Dashes mark draws too small to measure or larger than the syringe.
| Vial | BAC water | Concentration | 0.5 mg | 1 mg | 2 mg |
|---|---|---|---|---|---|
| 10 mg | 2 mL | 5 mg/mL | 10 u | 20 u | 40 u |
| 20 mg | 2 mL | 10 mg/mL | 5 u | 10 u | 20 u |
Dosing and protocol
Cosmetic use: reconstituted solution mixed into serums or applied directly, typically 0.5 to 2 mg per mL of finished product, on expression-line areas daily.
Users reconstitute the vial and blend it into a serum or apply the solution directly to expression-line areas (forehead, crow's feet) daily. Common finished-product strength is 0.5 to 2 mg per mL, so a 10 mg vial makes 5 to 20 mL of serum. The syringe figures here are for measuring while mixing, not for injection. Refrigerate the made-up solution like any reconstituted peptide.
Pharmacokinetics
No curve is shown, on purpose.
SNAP-8 is a topical cosmetic ingredient; it acts locally in skin and is not meaningfully absorbed to circulation. Systemic pharmacokinetics do not apply to how it is used.
How it is thought to work
An eight-amino-acid extension of Argireline, itself a fragment of the SNARE protein SNAP-25. The proposed action is competitive interference with SNARE complex assembly, damping the acetylcholine release behind expression lines. It is a cosmetic ingredient, applied to skin.
What the evidence supports
This table grades how well each outcome has been studied in humans, not how well SNAP-8 works. A strong grade means the question was asked properly, and the answer may still have been negative. Nothing here is inherited from a drug class, a close analog, or the parent molecule of a fragment.
| Outcome | Strongest published evidence |
|---|---|
| Wrinkle appearance, topical | Human, observational |
| SNARE complex interference | Mechanistic only |
| Any outcome from injection | No data |
Storage and handling
Lyophilized vials keep best cold, dark, and dry; refrigeration is the community default and freezing lyophilized powder is common for long holds. After reconstitution, refrigerate at 2 to 8 C, do not freeze the solution, and date the vial. Bacteriostatic water's preservative keeps multi-dose use practical for about 28 days by USP convention, though our 120-day stability study found the preservative itself outlasts that window.
Got a certificate of analysis with your vial? Run it through our COA Reader: it reads the report in plain English, checks purity and mass against the label claim, and links the testing lab’s own verification page. Our guide to reading a COA explains what the numbers do and do not tell you.
Sources
- Blanes-Mira et al., A synthetic hexapeptide (Argireline) with antiwrinkle activity, Int J Cosmet Sci 2002PMID 18498523 · DOI
- Lipotec/Lubrizol SNAP-8 technical dossier (manufacturer data)Manufacturer data