Synapse Repair Serum
Nine-peptide overnight signal serum
$89.95
30 ml / 1.0 fl oz · Priced in USD
- Free US standard shipping over $75.00 — 3–5 business days, tracked. Under that, $6.95.
- 30-day returns, opened or unopened. Full refund policy.
- A free 5 ml sample ships with every order — add it from Discovery.
One-time purchase — no subscription, no recurring charge. Your statement will show NEURO.
Key actives, at disclosed concentrations
Acetyl Hexapeptide-85%
Best known for the look of expression lines.
Palmitoyl Tripeptide-1 + Tetrapeptide-72%
Supports a firmer-looking surface.
Niacinamide4%
Evens the look of tone and supports a smoother finish.
Concentrations are printed on the carton as well as here. Where an ingredient carries no percentage it is present at a supporting level we do not consider worth claiming.
About this formula
Synapse Repair Serum is the formula Neuroderm was built around. Nine cosmetic peptides — including acetyl hexapeptide-8 at 5% and a palmitoyl tripeptide-1 / tetrapeptide-7 pair at 2% — sit in a thin, fast-absorbing aqueous base with 4% niacinamide and a low-molecular-weight hyaluronic acid blend.
It layers under any moisturizer without pilling and is formulated to be tolerable nightly, including alongside a retinoid on alternating evenings. Fragrance-free, dye-free, non-comedogenic. Net contents 30 ml (1.0 fl oz) in an amber glass bottle with a metered dropper.
How to use
- 1Use in the evening on clean, slightly damp skin.
- 2Dispense 4–5 drops. Press over face and neck; do not rub in aggressively.
- 3Follow with a moisturizer. Allow 60 seconds if layering another active.
- 4Nightly. If you also use a retinoid, alternate evenings for the first two weeks.
Full ingredient list
Aqua/Water, Glycerin, Niacinamide, Propanediol, Sodium Hyaluronate, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Copper Tripeptide-1, Acetyl Tetrapeptide-5, Hexapeptide-11, Pentapeptide-18, Tripeptide-10 Citrulline, Oligopeptide-1, Panthenol, Allantoin, Betaine, Xanthan Gum, Sodium Phytate, Citric Acid, Phenoxyethanol, Ethylhexylglycerin.
Ingredient lists are subject to change. Always read the declaration on the carton you receive. If you have a known allergy, patch test on the inner forearm for 48 hours before facial use. Discontinue use if irritation occurs.
Verified purchases
4.8 out of 5 · 2,417 reviews
“I bought Synapse Repair Serum on the strength of the disclosed percentages and it is the first time a product has done exactly what the page said it would.”
“Took about six weeks before I could see it, which the page did warn me about. Glad I did not give up at four.”
“Third bottle. The packaging keeps it stable much longer than the clear-bottle version I used before.”
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