A drug that sounds too good to be true - and maybe it is.
It has been tagged the Barbie Drug.
Because, it is claimed, it can make you tanned and thin, just like the doll herself.
If that is your ideal, of course.
Plus, as an added bonus, it is said it increases your sex drive too.
But what are its side effects, and does melanotan two really work?
In the us, the fda has just urged consumers to stop using it, saying "this product is being marketed and sold illegally".
But the doctor trialling it here claims it works and it is safe.