Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian Emerging Threat: Melanotan, Repackaging, and Online Sales Why I Refuse to Use Salmon Sperm & Melanotan II in My Practice MD breaking down Melanotan II Part 2 of my peptide series. The research, the risks, the reality. Long term safety data? Nonexistent. 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.