Melanotan What It Is and Its Relation to Skin Cancer Melanotan 1 (10 MG) Sigma Compounds 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 longer lasting than Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Avoid nasal tanning sprays or nasal tanners entirely. These products promise an all over tan without sun exposure but they are unregulated, can be unsafe, and contain potentially risky substances like Melanotan 2.