1. After lip augmentation with hyaluronic acid injection, slight bruising or swelling may occur at the injection site on the lips, which is a normal phenomenon. It usually takes 1 or 2 days to recover. Try to avoid contact with water within 6 hours to prevent needle infection. 2. Avoid violent friction in a short time. Don't apply ice or hot compress to the lip augmentation area. Avoid doing sauna for a week, especially don't massage the treatment area. 4. One week after hyaluronic acid is injected into the lips, try not to touch the lips when eating, so as not to accelerate the decomposition of hyaluronic acid by eating too cold or too hot food.