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. Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Up to a million Britons use steroids for looks not sport Health The Guardian Dangerous' tanning products promoted by influencers