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. Melanotan II Erectile Dysfunction: What the Research Shows and Practical Considerations How to Take L Carnitine Liquid: Complete Guide The Science of Good Health Weight Loss Supplements for Athletes: What Works, What Doesn't, and What to Avoid