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Reviewed by MyPeptideMatch Editorial TeamLast reviewed February 2026Updated February 2026

SNAP-8 Dosing Protocol: 10 mg Vial — Anti-Wrinkle Facial Injection Guide

SNAP-8 (Acetyl Glutamyl Heptapeptide-3) cosmetic peptide dosing guide for subcutaneous micro-injections targeting expression wrinkle reduction.

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Quickstart highlights

SNAP-8 (Acetyl-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2) is an 8-amino acid analogue of the N-terminus of synaptosomal-associated protein-25 (SNAP-25), a key SNARE complex protein required for synaptic vesicle fusion at the neuromuscular junction.

  • Concentration: 2 mg/mL (10 mg vial + 5 mL bacteriostatic water).
  • At 2 mg/mL: 50 µg = 2.5 units, 100 µg = 5 units per injection site (30G–31G facial needle).
  • In vitro: SNAP-8 reduces catecholamine release by 30–52% — mechanism is partial SNARE inhibition, not paralysis.
  • One 10 mg vial provides 100 injection-site doses at 100 µg — ideal for multi-area protocols over 12 weeks.
  • Effects are fully reversible and less potent than botulinum toxin; results require weekly injections.

Dosing table

For educational reference only. Your prescribing provider may adjust doses based on your clinical profile and response.

WeekDose (µg)UnitsFrequencyNotes
1-4502.51–2x weekly (per site)50 µg — 2.5 units per injection site; 3–5 target sites; conservative start for facial cosmetic use
5-1210051–2x weekly (per site)100 µg — 5 units per site; typical cosmetic maintenance dose; 10 mg vial provides 100 site doses

Reconstitution steps

  1. Draw 5 mL bacteriostatic water (two 2.5 mL draws); inject slowly down the vial wall.
  2. Swirl gently until dissolved; do not shake — SNAP-8 is an octapeptide sensitive to mechanical agitation.
  3. Final concentration: 2 mg/mL. At 2 mg/mL: 50 µg = 2.5 units, 100 µg = 5 units per injection site.
  4. Label with date; refrigerate at 2–8 °C. Use within 28 days.

Supplies needed

8-week plan

  • 1 vial
  • 30 syringes
  • 5 mL bac water
  • 30 alcohol swabs

12-week plan

  • 1 vial
  • 45 syringes
  • 5 mL bac water
  • 45 alcohol swabs
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Protocol overview & cycle notes

Reduce dynamic expression wrinkles through local SNARE complex inhibition using SNAP-8 micro-injections near target facial muscles, providing a less invasive alternative to botulinum toxin with reversible, partial acetylcholine vesicle fusion inhibition.

Cycle length: 12 weeks on.

Off-cycle: 4–8 weeks off; assess wrinkle improvement before next cycle.

Storage & handling

Lyophilized: store below 25 °C. Reconstituted at 2 mg/mL: refrigerate 2–8 °C; use within 28 days. SNAP-8 is most commonly applied topically; subcutaneous injection delivers a higher local concentration for more pronounced SNARE-inhibition effects.

Injection & tracking tips

  • Use the finest gauge needle available (30G–31G, 4 mm) for facial micro-injections near target expression muscles.
  • Inject at a 30–45 degree angle into the superficial subcutaneous layer — not into the muscle belly.
  • Target areas: lateral orbicularis oculi (crow's feet), corrugator supercilii (glabella), frontalis (forehead). Inject 1–2 cm from visible expression lines.

Tracking

Logging helps you and your provider spot patterns and adjust dose or timing.

  • Photograph target expression areas weekly under identical lighting and facial expression.
  • Measure wrinkle depth using a wrinkle scale (0–4 Wrinkle Severity Rating Scale) at baseline, 4 weeks, and 8 weeks.
  • Document patient satisfaction score (0–10 Global Aesthetic Improvement Scale) monthly.
Log your cycle in the calculator →

How this works & references

SNAP-8 (Acetyl-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2) is an 8-amino acid analogue of the N-terminus of synaptosomal-associated protein-25 (SNAP-25), a key SNARE complex protein required for synaptic vesicle fusion at the neuromuscular junction. By competing with SNAP-25 for inclusion in the SNARE complex (with syntaxin and VAMP/synaptobrevin), SNAP-8 partially inhibits acetylcholine vesicle fusion, reducing neuromuscular transmission efficiency and resulting in less forceful facial muscle contraction. In vitro studies show SNAP-8 reduces catecholamine release by 30–52% compared to controls. Effects are dose-dependent and fully reversible.

Sources

  • Source: Ruiz MA et al. — SNAP-8 in topical formulations: in vitro catecholamine release inhibition. Pharmazie. 2007

Frequently asked questions

How does SNAP-8 compare to botulinum toxin (Botox)?
Botulinum toxin cleaves SNAP-25 irreversibly, causing complete neuromuscular blockade for 3–6 months. SNAP-8 competes reversibly with SNAP-25 for SNARE complex formation, producing partial (30–52% in vitro) and temporary neuromuscular inhibition. SNAP-8 requires weekly injection versus 3–6 month toxin sessions. The effect is considerably milder — suitable for patients seeking subtle, natural-looking improvement or who cannot tolerate neurotoxins.
Is subcutaneous SNAP-8 injection significantly better than topical?
Subcutaneous injection bypasses the skin barrier and delivers SNAP-8 directly to the subcutaneous space adjacent to expression muscles, theoretically producing higher local concentrations than even the best-penetrating topical formulations. However, no published clinical trials directly compare subcutaneous versus topical efficacy. Most published SNAP-8 data uses topical application.
How many treatment sessions are needed to see results?
Most practitioners report visible wrinkle reduction in 4–8 weeks of weekly injection (1–2x per week per site). Maximum effect is typically seen at 8–12 weeks of consistent treatment. Without continued maintenance, effects reverse within 4–8 weeks as the peptide clears and normal SNARE complex function is restored.
Can I combine SNAP-8 with hyaluronic acid fillers?
Yes — SNAP-8 and HA fillers complement each other. SNAP-8 targets dynamic (movement-related) wrinkles via neuromuscular inhibition; HA fillers address static (volume loss) wrinkles. Some practitioners combine both in the same session. Inject SNAP-8 first, then filler, using separate syringes.
What safety profile does SNAP-8 have?
SNAP-8 has an excellent safety profile in cosmetic use: no systemic toxicity has been documented in published literature; local erythema and mild bruising at injection sites are the most common adverse events. Unlike botulinum toxin, there is no risk of spread, ptosis, or systemic paralysis. The partial and reversible mechanism of action makes SNAP-8 inherently self-limiting.

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This content is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting any peptide therapy. Dosing and protocols may vary by formulation and prescriber.

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