Princess beauty needle is a kind of beauty needle, and it is a treatment method to repair facial fullness syndrome. Facial overfilling syndrome refers to unnatural and uneven swelling or depression after injection of hyaluronic acid, which makes the skin at the injection site look like steamed bread. This phenomenon usually occurs when the injection technology of hyaluronic acid is incorrect or improper, such as excessive injection, uneven injection point or inconsistent injection depth. Princess Beauty Needle decomposes the excessive injection of hyaluronic acid by injecting hyaluronidase, so that the face can be restored to a natural and even state.