Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Melanotan 1 vs. 2: My Summer Journey & Real Results Natural Kaos Melanotan & Tanning Injections: Safe or Risky? Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report 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 Nitisinone increases melanin in people with albinism National Institutes of Health (NIH)