Side by side
Argireline vs Melanotan II
Both are discussed for skin & hair. What this site records about each, side by side. Every figure is on the compound's own page with the source it came from.
| Argireline | Melanotan II | |
|---|---|---|
| What it is | A topical peptide marketed as a needle-free alternative to botulinum toxin. It has real published studies, small effects, and essentially no risk. | A melanocortin agonist that darkens skin by stimulating melanin production. Carries the most serious dermatological concern of anything on this site. |
| EvidenceHow much human evidence exists, not how well it works. | Early human trials | Preclinical |
| Regulatory statusReviewed 2026-08-16 | Sold as a cosmetic ingredient, not a drug, in the United States, the European Union and elsewhere. Cosmetics are not assessed for efficacy before sale, and claims must stay within cosmetic language. That is why products describe the appearance of wrinkles instead of treating them. | Not approved for human use in any jurisdiction. Multiple national medicines regulators have issued public safety warnings specifically about melanotan products, citing unregulated manufacture and dermatological risk. Sold only as a research chemical. |
| Routes | Topical | Subcutaneous |
| Half-life | Not recorded | 1 hours |
| Cheapest per mgVials only, read from vendors' own listings and dated on the price index. | $0.49/mg | $1.75/mg |
| Median per mg | $1.09/mg | $3.50/mg |
| Vendors with a price | 4 | 46 |
| Storage once mixed | A finished cosmetic contains a preservative system and typically lasts 6 to 12 months after opening. A serum mixed at home from raw powder does not have that protection and will grow bacteria. That is the practical risk with this compound, and it is microbiological rather than pharmacological. | Refrigerated at 2–8 °C. Do not freeze once mixed. |
Compare two other compounds · The full price index
This page is educational. It describes what published research reports, not what you should do. Peptides discussed here are largely not approved for human use, and nothing on BioAlmanac is medical advice. Nothing here ranks these two against each other. A table can show that one has more human evidence behind it or costs less per milligram; neither of those is a recommendation, and the right comparison for any person is one their doctor makes with them.