Melanotan 2

Melanotan II is a synthetic peptide that stimulates melanin production in the skin, leading to tanning effects. Originally developed to reduce skin cancer risk by enhancing natural pigmentation, it is now commonly used for cosmetic tanning. Melanotan II may also influence sexual arousal due to its action on melanocortin receptors. It’s typically administered via injection. Side effects can include nausea, flushing, and appetite changes, and its safety profile is still under investigation in many regions.