Research Implications of Melanotan 2 Peptides Core Peptides Melanotan 2 Peptide Research Grade Crown Peptides UK 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 longer lasting than Melanotan I is one of the oldest peptide tools in skin research. It does one thing and it does it without the UV damage pathway., Follow @lebaneselabs for daily peptide research., #melanotan #mt1