Tanning peptides like melanotan are trending online, but theyre not approved, not regulated, and illegal to advertise in Australia. When products havent been properly tested, theres no way to know FDA Fast Facts Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA)