A chin implant is a surgical procedure that involves placing an implant in the chin to improve its size and shape. The implant is typically made of a biocompatible material such as silicone or polyethylene. The procedure is typically performed under general anesthesia and takes about one to two hours to complete. After the surgery, the patient will need to follow the surgeon's instructions for post-surgical care, which may include taking antibiotics to prevent infection and avoiding strenuous activities for several weeks. The results of the surgery are usually permanent.