After the treatment, the main goal is to prevent placing any tension or pressure on the treated area. To do this, you will need to sleep on your back with your head elevated using 2 to 3 pillows for 3 nights. You can also use a wrap-around neck pillow to stabilize your head when you sleep. By doing this, the treated area will remain free from any pressure and the filler will settle normally, thus, preventing the formation of any lumps.