GHK-Cu vs SNAP-8
Key differences, research and prices — side by side.
The key difference
Both appear in skincare research but work differently. GHK-Cu delivers copper and influences genes tied to collagen and tissue remodeling. SNAP-8 is a synthetic octapeptide designed to interfere with the SNARE proteins nerves use to trigger muscle contraction.
| GHK-Cu | SNAP-8 | |
|---|---|---|
| What it is | GHK-Cu is a naturally occurring copper-binding tripeptide (glycine-histidine-lysine) first isolated from human plasma in 1973. | SNAP-8 (acetyl octapeptide-3) is a synthetic eight-amino-acid peptide developed for cosmetics. |
| How it works | It delivers copper to cells and has been shown in lab studies to influence the activity of many genes tied to collagen production and tissue remodeling. | It is designed to interfere with the SNARE protein complex that nerves use to trigger muscle contraction, the same system targeted by botulinum toxin. |
| Research areas |
|
|
| Evidence | Mostly animal & lab studies | Very limited research |
| Regulatory status | Widely used in topical cosmetic products. Not approved by the FDA as a drug. | Used as a topical cosmetic ingredient. Not an FDA-approved drug. |
| Research area | Dermal | Dermal |
| Sequence | Gly-His-Lys:Cu | — |
| Lowest price | $0.48/mg → | $3.15/mg → |
| Tested vendors | 2 | 2 |
| Third-party lab results | 5 COAs | 1 COAs |
Related comparisons
Free weekly email
Get The Peptide Audit Weekly
Every Monday: the week's price drops and restocks, new third-party lab results, and a plain-English research guide with the latest studies. No spam — unsubscribe anytime.
Educational comparison of published research — not medical advice, and not a recommendation of either compound. Prices are for reference only. Compounds referenced are sold by third parties for laboratory research use only and are not for human consumption.