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 TikTok influencers slammed for promoting melanotan as a nasal tanning product The Canberra Times Canberra, ACT Nasal tanning sprays and oral tanning drops are often marketed as quick fixes for glowing skin but these products are unregulated in the UK, with unknown ingredients, dosing, and formulation. They have Is Melanotan II (Afamelanotide) nasal spray safe to use for tanning?