Well, I SUPPOSE there ARE plonkers out there who really believe that rubbing cream into your skin would make you lose weight !
Only one way to lose weight - don't eat, and if you need help with that, just think of the poor souls around the world who haven't enough to eat, and the prisoners of war who were given just enough to survive (I'm thinking Burma railway here), and that should make you think whether you need another donut or not.
This is in America, it wasn't promoted in UK in same way!