Is fat-dissolving treatment good?

As I get older, even though I have a generally slim build, it seems I am obese only in specific areas, particularly my abdomen.

Since I have a slim build but only my abdomen protrudes, it looks really bad, so people around me have been suggesting that I get a fat-dissolving procedure. However, I have never had that kind of surgery before, so I am very worried. I would also like to know if a single fat-dissolving procedure is sufficient, or if I need to do it multiple times.

Also, if I get a fat-dissolving procedure, will abdominal obesity disappear completely?

I would appreciate the opinions of those who are knowledgeable about this.