Release of skin adhesions from any procedure, including a facelift, can be successful as it combines the release with the introduction of an intervening layer of soft tissue. The timing of it can be debated after the initial surgery but anytime after three or four months would not be unreasonable particularly after the origin of them was from hematomas.
Your post-operative recovery has been complicated by the blood collections. You now have scars and firmness. Fat grafting is used for volume replacement but not scarring; however it has been reported the the overlying skin has a better texture and appearance. I would give the area more time to settle down and soften and have a re-evaluation..
I am sorry you had hematomas after your face lift. Re-operation and fat grafting may help but it depends on the problem. It is not possible without at least photos and ideally a face-to-face exam to say what is best for you.
I'm not really sure the nature of the problems you've experienced after facelift. I don't believe I've ever confronted anything like this. If there is volume deficiency as a rare byproduct of the operation and fat grafting may be indicated.
Thank you for your question. Fat grafting may be able to smooth out the contour abnormalities that you are experiencing. You are still early in the postoperative period. I would recommend waiting at least 6 months for the everything to heal before embarking on another procedure. Good luck.
Certainly fat transfer can help but given that you are only 3.5 months out I would say let this go for 6 months at least. Most likely a lot of the lumpy areas will resolve with time. The bleeding causes scarring and scars take up to a year to mature and remodel. I know waiting a year may not be the answer for you but as long as you can wait the better. The lymphatic draining is also compromised which contributes to that lumpy hard feeling. That too will resolve with time. If you can make yourself wait that long you may not need fat transfer. But, in the end fat transfer can do a lot for the areas that may not end up settling to your liking.