The swelling time of hyaluronic acid lip augmentation is usually 7 to 10 days, and you need to pay attention to the postoperative care to promote the local swelling to recover as soon as possible. After hyaluronic acid injection, local tissues may be swollen, and the lips are more likely to be swollen due to richer blood flow. Cold compresses can reduce edema within 48 hours after hyaluronic acid lip augmentation injection, and hot compresses can be applied appropriately after 48 hours. Usually, edema or local bruising can be absorbed and recovered in 7 to 10 days, and gradually become natural. As the lip is relatively rich in blood flow, as long as there are no complications such as vascular embolism, infection, etc., the recovery is generally faster. Hyaluronic acid injection can be restored to its natural state in about 1 month. If the effect is not satisfactory after 1 month, it is recommended to go to the hospital in time for additional injections under the doctor’s guidance.