It is very safe to inject hyaluronic acid into Nanjing Shiermei Plastic Surgery Hospital. A large number of surgical examples have proved that it is very safe and has no side effects. Therefore, patients who need to inject hyaluronic acid in clinic need not worry too much about the side effects of hyaluronic acid injection. Hyaluronic acid injected with the approval of the Ministry of Health can be absorbed and metabolized by the human body, so there will be no residue in the body.