How to preserve fat after fat grafting on face?

In the immediate post- operative period (first few weeks), the fat should not be disturbed or manipulated too vigorously through either manual manipulation or by placing direct pressure on it such as with laying on it.  This could move the fat around from where it was placed and also disrupt the neovascularization that needs to take place to keep the fat cells alive.  The direct pressure (from laying on it) or increased interstitial pressure (from excessive swelling or excessive volume injected) can also inhibit the diffusion of oxygen and nutrients in this critical period.  As such head elevation to minimize the swelling and to keep the fat where it was placed is important.  There is no evidence that any injections of any other autologous or artificial products will increase the longevity of the transferred fat.  It has more to do with good surgical technique.  Best wishes.

do PRP and sculptra injections and avoid any over mainpulation or heating to the area.  there are not many studies that show any significant issue that can be prevented to keep fat after injection.  Best, Dr. Emer.

There is not much you can do to affect the longevity or survival of the fat.  Thinking a lot definitely won't harm it.  The survival is due to the technique used to harvest and inject, and the amount injected.  Also varies depending on where the fat came from on the body.  If your face feels tight that is completely normal