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. Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan II Safety: Tanning Injection LIVV Natural Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News