GHK-Cu vs Melanotan II
Which has more real evidence behind it? This compares how well each has been tested, not which one works better.
This page has not yet been reviewed by a credentialed medical professional. It is educational and is not medical advice.
Melanotan II has the stronger evidence: human trials, compared with animal studies only for GHK-Cu.
The research, side by side
Counts come from PubMed and ClinicalTrials.gov searches and can include studies that only mention a peptide. Bars use a log scale.
| GHK-Cu | Melanotan II | |
|---|---|---|
| What people use it for | Anti-aging skincare, wrinkles, hair and wound healing. Common in cosmetic serums. | Tanning and libido. Sold online; regulators have warned against it. |
| Approved as a medicine | Cosmetic ingredient (topical); no approved drug use | No |
| What the evidence says | Strong lab data and some animal wound-healing work. Reviews note a "surprising absence" of clinical studies of GHK-Cu in wrinkle products, and no human data for injection. | Small human studies exist, but it is unapproved and carries recognized safety concerns. |
| In tested sport | Check the WADA list | Check the WADA list |
Common questions
Which is better, GHK-Cu or Melanotan II?
No study compares them head to head for most uses, so this page compares how much evidence exists, not which works better. Melanotan II has the stronger evidence: human trials, compared with animal studies only for GHK-Cu.
Is GHK-Cu or Melanotan II approved?
GHK-Cu: Cosmetic ingredient (topical); no approved drug use. Melanotan II: not an approved medicine.
Can you take GHK-Cu and Melanotan II together?
We found no controlled studies testing GHK-Cu and Melanotan II together, so the effects and safety of combining them are unknown. Talk to a clinician.
Keep exploring
Educational only, not medical advice. "What people use it for" describes common claims, not recommendations.