Precautions after operation 1. Try to avoid sauna or strenuous transportation within 5 days after injection. 2. Immediately after the operation, ice should be applied to the treatment site to relieve slight redness and swelling. 3. Please keep the surgical site clean after operation, avoid excessive massage and kneading, avoid high temperature and humid environment, and avoid exposure to the sun for a long time. 4. After two days of treatment, the treatment area should be cleaned gently to avoid rubbing hard. 5. Don't wipe the treatment area with ointment, skin care products or cosmetics after operation, and don't touch the treatment area with your hands to reduce the chance of infection. 6. Do not drink or smoke within one week after injection.