How long does hand fat transfer last?

Fat transfer is permanent, however your results can still be influenced by other things that impact the fat in your body such as normal aging, weight gain and loss. You may want to consider Renuva. This product is designed to address age related fat loss. It is similar to traditional HA fillers in that you will see improvement immediately with treatment. However it differs in that over time the product is replaced by your body's own fat which provides longer lasting results. No fat transfer or surgery needed. Visit my website to learn more.

Theoretically
it lasts forever as it is a graft and if the transferred tissue survives it
should not dissipate. I recommend you seek out a board certified plastic
surgeon so that they may examine you and give you a proper assessment.Best
of luck to you

Your question is a good one and the reality is no one nows for sure as it has never been studied long-term. Short-term results (6 months to a year) shows good fat retention stability in the hands but what happens five or ten years later as one ages can not be said with certainty. In theory, fat transfer (after it has settled into the final retained volume) should be permanent but few fat areas in the body are completely stable throughout one's lifetime.