The headline says it all. What can go wrong with Renuva? Are there any serious complications to worry about? I am very much considering Renuva to help replace facial fat. I am in my mid twenties but have already lost a lot of face fat due to stress. So I want to make sure the outcome of this procedure is a good one. Also, can Renuva be injected in the under eye area? My cheeks and my under eyes are my main concern.