Because full lips make people like it better. Autologous fat is an ideal material for lip augmentation, and its own tissue will not be rejected. You can also choose to inject hyaluronic acid for lip augmentation, and choose lip augmentation materials according to your own needs. According to everyone's physique, the number of injections is also uncertain, usually once or twice. I suggest you go to a regular plastic surgery hospital for consultation and make a suitable surgical plan according to your five senses and needs.