Dangerous' tanning products promoted by influencers BBC News 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 No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Using a Nasal Tanning Spray Scarred Me for Life This Morning Reacting to TikTok Melanotan Nasal Spray Challenge Tanning Nasal Spray: Should You Skip It?