Frontiers Inhibitory Effect of the Melanocortin Receptor Agonist Melanotan II (MTII) on Feeding Depends on Dietary Fat Content and not Obesity in Rats on Free Choice Diets 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. Man warns against 'dangerous' tanning injections after turning so dark he 'looked like Madge from Benidorm' and now has the freckled skin of a 60 year old Melanotan 2: Day 6 , Another one hour in what minimal sun we had today. , No tanning beds, just sun. , Moved down to 50mcg before sun exposure, No more side effects :) , Before & before , Well see Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn