What are the white spots on my arms? Idiopathic guttate hypomelanosis explained Worst patchy skin using melanotan 2 after 2 months. Anyone else got this problem? This has happened after exfoliation. Im type 1 naturally and use sunbeds to tan. : r Melanotan2 Figure 1 from The efficacy of afamelanotide and narrowband UV B phototherapy for repigmentation of vitiligo. Semantic Scholar 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