Melanotan II: Tanning, Sexual Health Benefits, & Safety Concerns You Should Avoid Using Nasal Tanning Sprays Tanning from the inside out = Highly Dangerous and Illegal!, Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such as injectable Targeting the central melanocortin system for the treatment of metabolic disorders Nature Reviews Endocrinology No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Melanotan & Tanning Injections: Safe or Risky?