Hyaluronic acid injection rhinoplasty is one of the most popular non-surgical rhinoplasty methods at present. It has the features of no incision, no bleeding, quick recovery and obvious results. Although its safety is relatively high, it is not completely free of any risks. Hyaluronic acid injection may also bring some of the following problems. 1, the timeliness of rhinoplasty: no matter which brand of hyaluronic acid, its maintenance time is not permanent, but has a certain timeliness. Since it can be absorbed by the body, its maintenance time is generally 6-12 months. If you want to keep the effect of rhinoplasty, you need to inject it again. 2. Uncertainty of shaping effect: When injecting hyaluronic acid, it is usually injected locally, so the shaping has limitations. At the same time, hyaluronic acid has the possibility of spreading and shifting, resulting in a wider and larger nasal bridge and poor long-term shaping effect. 3.Complications of skin: swelling of injection site, erythema, cyst, infection, pain, bead-like shape, non-specific mass, etc. 4, vascular embolism: when hyaluronic acid is injected into the subcutaneous or dermal tissue, it can cause acute edema of the local tissue, and the swollen tissue can lead to subcutaneous vascular embolism by compressing the blood vessels, which can further lead to ischemic necrosis of the skin. The clinical manifestation is pallor and tissue hardening at the injection site. Arterial occlusion occurs immediately or within 2 days after injection and can present with skin pallor and severe pain, and in severe cases can even lead to blindness. Venous occlusion is a delayed adverse reaction, usually occurring 14 days after the injection, and is clinically manifested by vague pain and abnormally dark skin, white skin, and severe pain and vague pain. You need to contact the surgeon urgently to explain the situation when you encounter this situation, and you should go to the hospital promptly. Will the brand and type of hyaluronic acid have an effect on rhinoplasty? At present, there are more than ten kinds of hyaluronic acid in clinical application, there are domestic ones and imported ones, there are monophasic ones and cross-linked ones; there are long-acting ones and short-acting ones. Experienced doctors will use the appropriate products to inject according to different skin characteristics and patient requirements. For rhinoplasty, if a candidate just wants to simulate the effect of rhinoplasty first, short-acting ones are recommended; if one refuses rhinoplasty surgery and just wants to do injectable rhinoplasty, long-acting ones can be used.