Doctors warn against viral nasal spray tanning trend Melanotan 1 (10 MG) Sigma Compounds Tanning Bed & Nasal Spray User Warned Of Dangers: 'You'll Regret That' BETATAN TANNING NASAL SPRAY 15ML Siena Distribution 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.