liposuction in inner thighs, left with dent and slight sagging. Will they return to their previous look? (photo)

Hi Reserved904932. You're right, fat grafting is a maneuver used to correct contour irregularities due to liposuction. I would wait at least a year because minor contour issues may resolve with time. The good news is that 100cc is a very small amount of liposuction, especially in the thighs, so you won't need much for correction.

Your dent could probably be filled back out with a fat graft from an area with more fat or with cadaver fat.

Contour irregularities are common complication from liposuction. Especially when you are thin, the differences in fat in the surrounding areas compared to the area that fat was removed from can become visible. Fat grafting could even those areas out however could lead to a similar problem in the different area where fat was removed if you are pretty thin. I would first allow months and months of healing before making a decision on another surgical procedure