Say No to Nasal Tanning Sprays Dermatology Times Melanotan II Erectile Dysfunction: What You Need to Know 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 Tanning Injections & Nasal Sprays: Everything You Should Know Rise in social media influencers promoting dangerous nasal tanning sprays Melanotan II Nasal Spray Achieve Tanned Skin & Wellness Benefits