Having children is a wonderful blessing and I would not change that for the world. Sadly, sometimes our body does change. One of the issues I had after my fourth, was I got a lot of stretch marks and a lot of loose skin. I was told the only thing I could do was get a tummy tuck. That is very frustrating to hear.
Now that I am in my late 40s, I am doing everything I can to keep the skin on my face nice and firm. I decided, if these things work for the face, why not the tummy. I thought it wa worth a shot. My tummy is not anywhere near pre chidlren, but I do feel like it has impooved quite a bit. I wish I knew about these things when I was younger, because I do believe I would have had better results.
These are the products I use, Link is in the name of the product.
Dermaroller: I do not think this is the exact product, but it is basically the same 1.5 mm
Matrrxyl S6 Serum
Retin A: I buy mine online