The choice for improving under-eye hollowness, and what are the effects?

Recently, I have been concerned about hollowness under my eyes and have been hearing about fat redistribution procedures. Many people say they have achieved satisfactory results, so I am thinking of giving it a try. I am curious about the actual changes and reviews from those who have undergone this procedure. For example, I would appreciate it if you could share details about the recovery period or how people reacted to their changed appearance.