GHK-Cu vs Melanotan 2
Which should you choose? Here's what you need to know.
The short answer
GHK-Cu is a regenerative copper peptide for skin repair and anti-aging. Melanotan-2 darkens skin through melanin stimulation. Completely different goals — skin quality vs. skin color.
On 6 Oct 2026 Peptide Compare tracked 60 vendors selling GHK-Cu, cheapest in stock $0.250 per mg at Eros Peptides, and 44 selling Melanotan 2, cheapest $1.31 per mg at Bio Pepz.
GHK-Cu
Anti-Aging / SkinGHK-Cu is a naturally occurring copper tripeptide that stimulates collagen, elastin, and wound healing. Clinical studies show increased skin firmness and reduced fine lines. Available as topical or injectable.
Choose GHK-Cu if:
You want to improve skin quality, firmness, and repair — anti-aging from the inside out.
Melanotan 2
Anti-Aging / SkinMelanotan-2 is a broad melanocortin agonist that stimulates melanin production for skin darkening. It also causes appetite suppression and libido changes as side effects. Not approved anywhere.
Choose Melanotan 2 if:
You specifically want darker skin pigmentation and are aware of the significant off-target effects.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Oct 6, 2026.
GHK-Cu
Melanotan 2
$14.99
Starting from
$15.00
$1.91
Avg. price per mg
$5.23
60
Vendors selling it
44
87 options
In stock now
36 options
9.1/10
Top trust score
9.1/10
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Our top-rated vendor for each, based on trust scores, purity testing, and price.
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Where does this data come from?
We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.