Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and It's a week of trending media talk about the dangers of Melanotan. I remember fielding a media interview about Melanotan 7 8 years ago. This trend has been around for a while, but Retatrutide (RETA) Research Peptide Australia 99% Purity Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan II (Tan Jabs): Why They're Not Worth The Risk Afamelanotide Wikipedia