Educational Wellness Information Only
This platform provides peer-reviewed research summaries and educational content about peptides for wellness and optimization purposes. Nothing on this site is intended as medical advice, diagnosis, or treatment. We do not claim any peptide can diagnose, treat, cure, or prevent any disease. Always consult a licensed healthcare provider before beginning any wellness protocol.
Statements on this site have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability and eligibility vary.
GHK-Cu (Scalp) vs Melanotan II
An educational, source-based comparison of GHK-Cu (Scalp) and Melanotan II — how each peptide works, what it's researched for, and what to know before going deeper.
Topical GHK-Cu applied to the scalp has been studied for its ability to enlarge hair follicles, prolong the anagen growth phase, and improve perifollicular vascularization through copper-dependent gene modulation.
- Follicle size and anagen phase
- Perifollicular angiogenesis
- Post-procedure scalp recovery (microneedling, transplant)
- • Topical use has a long cosmetic safety record.
- • Not a replacement for evidence-based therapies like minoxidil or finasteride.
Melanocortin agonist researched for tanning response and libido.
A non-selective melanocortin receptor agonist that stimulates eumelanin production via MC1R and influences appetite, libido, and erectile function via MC3R/MC4R.
- UV-independent pigmentation
- Erythropoietic protoporphyria (related compound, afamelanotide)
- Sexual function (overlap with PT-141)
- • Not FDA-approved.
- • Risk of new or changing nevi — dermatologic monitoring is essential.
- • Common side effects: nausea, flushing, spontaneous erections, appetite suppression.
Trial-evidence rating
Educational grade reflecting how many peer-reviewed studies and FDA actions we cite for each peptide. Not a clinical recommendation.
Early-stage research; conclusions are tentative.
Early-stage research; conclusions are tentative.
Study-by-study comparison
| Peptide | Study | Source | Year | Summary |
|---|---|---|---|---|
| GHK-Cu (Scalp) | Copper peptides and hair growth | Journal of the American Academy of Dermatology | 2007 | Reported follicular stimulation and improved hair density in early trials. |
| Melanotan II | Melanotan and melanocortin receptor pharmacology | Peptides | 2005 | Reviewed pigmentation and behavioral effects of MT-II in animal and human studies. |
Side-effect & safety grid
- Topical use has a long cosmetic safety record.
- Not a replacement for evidence-based therapies like minoxidil or finasteride.
- Not FDA-approved.
- Risk of new or changing nevi — dermatologic monitoring is essential.
- Common side effects: nausea, flushing, spontaneous erections, appetite suppression.
Educational summary of considerations reported in research literature — not a complete list of adverse events. Discuss with a licensed clinician before any use.
GHK-Cu (Scalp) vs Melanotan II — Key differences
- Class: GHK-Cu (Scalp) is classified as Hair · Follicle Health, while Melanotan II is Pigmentation · Melanocortin.
- Primary research focus: GHK-Cu (Scalp) — follicle size and anagen phase; Melanotan II — uv-independent pigmentation.
- Tag: Hair vs Skin · Pigmentation.