Tanning is the goal most tied up with the melanotan peptides, and it is also where the safety picture matters most. The two names people encounter are easy to confuse but are different molecules with very different regulatory status. Neither is an approved tanning product, and injectable tanning use is not something the evidence supports as safe.
Reviewed for accuracy · Last reviewed July 8, 2026The compounds below are the ones most discussed for tanning. Each links to its full profile, where the dosing, side effects, and sources live. They are ordered roughly by how much human evidence sits behind them, not by a claim that any one works.
The two are frequently confused but are not interchangeable. Melanotan-1 (afamelanotide) is MC1R-selective and has an approved implant for a rare light-sensitivity disorder, placed by a clinician; that approval is not for cosmetic tanning. Melanotan II is non-selective, more potent, and unapproved for any use, and its effects extend beyond pigmentation to appetite, sexual function, and cardiovascular tone.
Injectable tanning is not established as safe. Melanocortin agents can darken and alter existing moles, and there are published case reports of eruptive atypical moles and melanoma associated with Melanotan II use, so anyone using these compounds should have moles monitored by a clinician. Gray-market products are also unregulated and may be mislabeled or contaminated.
This page is an independent educational reference and is not medical advice, and does not indicate any approval status for any use. Talk to a doctor before starting any compound.