What exactly is Melanotan and how does the tanning solution work? PT 141 vs. Viagra: What's the Difference for Treating ED? Avoid nasal tanning sprays or nasal tanners entirely. These products promise an all over tan without sun exposure but they are unregulated, can be unsafe, and contain potentially risky substances like Melanotan 2. The Tanning Nasal Spray: See How They Work Fellas, do you take PT141 on the daily? #pt141 #peptide #menshealth #libido #libidoboosting