The common reasons why the indentation on the face does not subside when sleeping include long compression time, edema, skin aging and so on. 1. Long time compression:Generally, when sleeping, due to the local compression effect, the local blood circulation is not good, there will be indentation, the longer the compression time, the more obvious the indentation, the slower the recovery time. 2. Edema: If the patient himself has some edematous diseases, such as cardiogenic edema, nephrogenic edema, etc., the local tissue compression produces indentation during sleep, and this indentation is not easy to return to the normal state. 3. Skin aging: with age, human skin gradually aging, skin collagen, elastin and other gradual loss, sleep indentation on the face is not easy to fade. It is recommended that patients can massage the local to promote the disappearance of the indentation, if it is caused by edema, in a timely manner under the guidance of a professional physician to treat the original disease.