I had fat grafting in my forehead 8 years ago.
Recently it seemed to have sunken in quite a bit, so I got forehead filler.
Because I had fat grafting before, they explained that there might be adhesion and that it would probably feel much less comfortable during the procedure.
It was more tolerable than I had worried it would be.
Above all, the shape after the procedure was so pretty that if it disappears, I want to do it again!