Yohimflame definitely works, and it works very well. I have seen with my own eyes how it helped my wife lose one size in about 2 months, so I can personally vouch for its effectiveness. I was a bit sceptical about it burning fat locally, but it does work.
Obviously, you should not expect a miracle effect of spraying just once a beer-belly, and see it deflate, but with consistency and diet yohimflame is a huge help for fat burning.