Melanotan II: Tanning injections, nasal sprays harmful to health Dangerous' nasal tanning sprays linked to killer cancer as Brits issued warning Melatonin Activated Micro Soluble Spray No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Let's talk about a really fun peptide that I call the vacation peptide you'll understand why after you read this! Melanotan 1 and 2 are basically just tanning peptides with fun