The skin also contains a large amount of hyaluronic acid, so hyaluronic acid injections are not harmful to the body, provided that regular hyaluronic acid that has passed national approval is used. Hyaluronic acid has a wide range of applications, but those with a history of severe allergies, those who have been injected with permanent fillers, those with abnormal blood clotting mechanisms, women who are pregnant or breastfeeding, those under 18 years old, those with skin inflammation or infection at the injection site, and those taking anti-inflammatory drugs (such as aspirin) cannot be injected. Women need to avoid menstruation and pregnancy for hyaluronic acid injection. After surgery, pay attention to proper care and follow the doctor’s instructions. Hyaluronic acid injections for wrinkle removal, plasticity and filling are now very common, but in recent years, hyaluronic acid accidents have occurred frequently, and many beauty seekers have suffered from rotten face, disfigurement and even blindness after incorrect hyaluronic acid injections. Therefore, when we need to inject hyaluronic acid, we must go to a regular medical beauty institution or hospital and find a professional doctor who is qualified and experienced to inject it, so as to ensure the effect as well as safety.