Hyaluronidase, or hyaluronidase, is usually not recommended for self-injection. Hyaluronidase belongs to a kind of enzyme that can hydrolyze hyaluronic acid, and it is also a hyaluronic acid dissolving substance that can be injected into the human body, which is commonly used in repairing hyaluronic acid contouring failures, but sometimes the injection is also able to alleviate the various complications of hyaluronic acid injections, as well as to alleviate the adverse reactions of hyaluronic acid injections, such as fat embolism. If you need to use, it is recommended to follow the doctor’s instructions, strictly control the indications for the use of drugs, to avoid blind abuse. If you use it blindly on your own, it may increase the chance of adverse reactions due to improper dosage of the drug. If localized edema, allergy, erythema and other adverse reactions occur after injection, it is recommended to consult a doctor promptly.