Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically 50 Weeks on Melanotan2. Used to be Type 1 and never able to tan. Have never felt better! Beard color change is epic : r Melanotan2 Melanotan II an overview ScienceDirect Topics 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