Once the injected fat dissipates, will the skin then sag? It stands to reason that delicate facial skin can remain stretched out after the injections are reabsorbed. Typically, what percentage of the transferred fat will remain permanently?
A: Unlikely for fat transfer to cause sagging skin to get worse
It is unlikely that a fat transfer will cause the skin in that area to sag later in life. The skin will sag due to the effects of gravity and aging, not due to the volume restoration that you can achieve with fat transfer. You may require more than one session of fat transfer as a certain percentage of the fat cells will not survive. That percentage depends on the technique and can be as high as 50% not surviving in some studies. Especially in the face, with its robust blood supply, the chances of the fat surviving are quite good. There are no long term studies at this time to determine the status of the skin 10 or 20 years after the procedure.