1, after injection of hyaluronic acid, there will be slight redness, swelling and itching, and the degree of occurrence will be different because of different constitutions, but this phenomenon will soon disappear, so don't worry. 2. Do not deliberately press the injection site within one week after injection, and cooperate with moisturizing work to increase the postoperative effect. 3. Please avoid touching the injection site within 6 hours after injection. During this time, you can gently clean it with water and soap and remove makeup slightly. 4. Please avoid extremely hot (sauna) or extremely cold places before the redness and swelling at the initial stage of injection are eliminated, which is not conducive to the recovery of the injection site. 5, postoperative patients should not take aspirin or other similar drugs, such drugs is to reduce the coagulation function of platelets, is not conducive to the recovery of the injection site. Bruising or bleeding at the injection site may increase.