Melanotan II: Tanning injections, nasal sprays harmful to health 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. Nasal Tanning Sprays: Unregulated Health Risks in the UK Thinking about that tanning nasal spray? Don't. Unregulated nasal tanning sprays are being sold online, claiming to give you a sun kissed glow. But they're risky and illegal. According to the Chartered Trading Melanotan II: Tanning injections, nasal sprays harmful to health MELANOTAN 2., 10