After filler injections, most patients do not need to worry that normal sleep or gentle facial movement will “move” the filler. Properly placed filler is injected into specific tissue planes and begins integrating immediately. However, swelling and tenderness can make the area feel different for several days, and the final result is usually best assessed at about two weeks. For most facial filler treatments, I recommend avoiding pressure on the treated area and sleeping on your back with your head elevated for the first night. If you had filler placed in the lips, cheeks, jawline, or under-eye area, it is reasonable to continue avoiding prolonged face-down or side-sleeping pressure for 48 hours, particularly if this is comfortable for you. There is generally no need to force back-sleeping for two full weeks. The exceptions depend on the area treated, the type of filler, injection depth, and your injector’s technique. For example, after nonsurgical rhinoplasty, avoiding glasses and direct pressure on the nose for about one week is particularly important. Do not massage, manipulate, or attempt to reshape filler unless your injector specifically instructs you to do so. Mild swelling, bruising, tenderness, and asymmetry can occur initially and commonly improve within one to two weeks. Contact your injector urgently for severe or increasing pain, blanching or dusky skin color, marked swelling, or any visual symptoms.