Hi
I lost 5 stone & while my skin wasn't great at the end of it, it definitely did start to improve (but then I put a bit back on, so it's hard to judge where it would have gone). Also, it wasn't horrific, or anything, just, not as good as I might have liked. It is a risk, but, I'd say a worthwhile one! & it takes eighteen months to properly settle back to where it will be. Tbh, I have loads of stretch marks, so, I don't think my skin is particularly fond of stretching anyway, haha. I think a lot of it is to do with your genes.
Hannah