Facial implants are specially formed solid materials compatible with human tissues, designed to enhance or augment the physical structure of your face. The precise type and size of facial implants best suited for you requires an evaluation of your goals, the features you wish to correct, and your surgeon's judgment. If you are bothered by a small chin, weak jaw, or lack of facial contour, plastic surgery with facial implants may benefit you. While any area of your face can be augmented with implants, the cheek or malar area, chin, and jaw are the most common sites for facial implants.
Source: the American Society for Aesthetic Plastic Surgery.