Is a fat transfer to the hips permanent?

About 60% of fat from the transfer is retained and the results are permanent. The size will change with your weight just as the rest of your body does. In other words, the fat acts like it was naturally there. You can get a good idea of the final result after 6 months.

You certainly will lose some fat after the operation as everyone does, and not all  of the grafted fat will survive but once the fat has taken and been re-vascularized meaning it has a new blood supply than that fat is permanent and will stay with you.

Fat transfer to the hips just like fat transfer to any other area is safe and reliable but can loose some of its volume with time. Generally speaking, because the hips receive less direct pressure than the buttocks in daily life, the fat there tends to survive and last longer. However a 30 to 50 % loss of volume is possible and the final amount that will remain will usually take 3-6 months to determine.