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. Reminder of serious health risks with 'Melanotan 2' self tan products Irish Pharmacist 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 How Melanotan 2 Affects Hair Colour Especially in Red or Ginger Hair Pure MT2