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Frequently Asked Questions
Is Melanotan 2 approved by the FDA or EMA?
No. Melanotan 2 is not approved by the FDA, the EMA, or any other major regulator for tanning or any other purpose. It is sold only as an unlicensed, "research use only" product. Two related but distinct compounds—afamelanotide (Scenesse) and bremelanotide (Vyleesi)—are approved for specific medical conditions, but Melanotan 2 itself is not approved for human use.
How does Melanotan 2 cause a tan?
Melanotan 2 is a synthetic analog of α-melanocyte-stimulating hormone. It activates the MC1R receptor on melanocytes, raising cyclic AMP and stimulating the enzyme tyrosinase, which increases production of eumelanin—the dark pigment responsible for tanning. Because it stimulates this pathway directly, it can darken skin with less UV exposure, though some UV usually intensifies the effect.
What are the most common side effects of Melanotan 2?
Commonly reported side effects include nausea, facial flushing, reduced appetite, drowsiness, and spontaneous erections in men. A significant dermatological concern is the darkening and enlargement of existing moles and freckles, plus new pigmented lesions—changes that can complicate melanoma detection. Serious events such as rhabdomyolysis have also been reported. Long-term safety is unknown.
Does Melanotan 2 protect against sunburn or skin cancer?
Not reliably. While increased eumelanin provides some UV defense, a Melanotan 2 tan does not replace sunscreen or eliminate the risk of UV damage or skin cancer. There is no evidence that it offers comprehensive photoprotection, and relying on it for that purpose is unsupported. Standard sun-protection measures remain the evidence-based approach.
Why does Melanotan 2 affect libido and appetite as well as skin?
Melanotan 2 is non-selective and also activates MC3R and MC4R receptors in the brain, which regulate sexual arousal and appetite. This is why users often report increased sexual response and decreased hunger alongside tanning. These effects are direct consequences of the molecule's mechanism and cannot be separated from its pigmentation effect.
Sources
- Dorr RT, Lines R, Levine N, et al. (1996). Evaluation of melanotan-II, a superpotent cyclic melanotropic peptide in a pilot phase-I clinical study. Life Sciences.
- Hadley ME, Dorr RT (2006). Melanocortin peptide therapeutics: historical milestones, clinical studies and commercialization. Peptides.
- Langan EA, Nie Z, Rhodes LE (2010). Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'?. British Journal of Dermatology.
- Cousen P, Colver G, Helbling I (2009). Eruptive melanocytic naevi following melanotan injection. British Journal of Dermatology.
- Evans-Brown M, Dawson RT, Chandler M, McVeigh J (2009). Use of melanotan I and II in the general population. BMJ.
- Minder EI, Barman-Aksoezen J, Schneider-Yin X (2017). Pharmacokinetics and pharmacodynamics of afamelanotide and its clinical use in treating dermatologic disorders. Clinical Pharmacokinetics.