What are the side effects of facial fillers with hyaluronic acid?

Using hyaluronic acid as a facial filler may come with side effects, including localized redness and swelling, hematoma, infection, and rarely, vascular embolism. Understanding their causes and ways to address them can help reduce risks and promptly solve issues. Choosing a formal hospital and a professional doctor is particularly important.

1. Localized Redness and Hematoma

This is one of the most common side effects, usually caused by needle trauma to the skin or superficial blood vessels during the injection process. This reaction usually resolves spontaneously within a few days, and ice packs can help reduce redness. To avoid hematoma issues, inform your doctor if you are taking anticoagulants such as aspirin or warfarin, and avoid alcohol or drugs that increase bleeding risks one week before the injection.

2. Local Infection

Injections require strict aseptic techniques. If hygiene is neglected or inferior hyaluronic acid is used, it may cause local infections, manifested as pain, fever, redness, and swelling. Seek medical attention immediately in such cases, and the doctor may prescribe antibiotics. Choosing a medical institution with formal qualifications and ensuring legal product sourcing is one of the keys to avoiding infections.

3. Allergic Reaction

A small percentage of people may be allergic to hyaluronic acid or its additives, causing skin itchiness, hives, and other symptoms. Consult before injection and undergo a skin allergy test if necessary. In case of allergic symptoms, stop the injection and promptly treat the symptoms.

4. Vascular Embolism and Tissue Necrosis

This is one of the most severe side effects, possibly caused by improper injection leading to hyaluronic acid entering blood vessels, blocking blood supply, and even endangering vision and facial tissue health. Symptoms include severe pain, irregular dark purple or white spots on the skin. Seek medical attention immediately if this occurs. The doctor may inject hyaluronidase to dissolve the hyaluronic acid and perform other emergency measures.

5. Asymmetry in Facial Appearance or Granular Feeling

Uneven manipulation at the injection site may lead to不协调 appearance or a granular skin feel. This can be improved through massage, but if symptoms persist, further adjustment may be needed. Choosing an experienced injector with a well-designed injection plan can significantly reduce the occurrence of such issues.

Although hyaluronic acid is a safe aesthetic method, improper manipulation or use of inferior products may lead to serious consequences. Choosing formal medical institutions and professionals, and understanding potential risks and management can minimize the incidence of side effects and protect one's health. If abnormalities occur, seek medical attention promptly.