How long do results from fat grafting or AirSculpt typically last? Is it easy to maintain? Most before-and-after photos show ppl in their 20's and 30's w/firm skin. I’m skeptical that the fat transfer results last beyond 5 years at my age (40). I’m hoping for a breast procedure for more fullness, would love to use fat transfer. Also considering tummy tuck. Some doctors proposed lipo 360 and fat transfer which sounds less invasive and awesome. But I have lots of loose belly & breast skin.