Generally, cutting double eyelids will not cause facial relaxation as you said. It is best to ask the doctor the reason of facial relaxation first, and then carry out targeted treatment. In general, double eyelid surgery can relieve the aging symptoms caused by sagging skin such as eyelid. A series of nursing work after the operation can be carried out first. It is recommended to observe for a period of time and pay attention to the timely hydration of the skin. If the skin is still loose, you should go to a professional hospital for examination and timely treatment.