What are the side effects of hyaluronic acid injections?

Side effects after hyaluronic acid injections are possible, but they generally do not seriously affect overall health. Hyaluronic acid is a commonly used cosmetic injectable, primarily intended to fill fine lines, wrinkles, and dry lines in the skin, thereby improving skin appearance and texture. Although hyaluronic acid injection is a safe and effective cosmetic procedure, some mild or temporary adverse reactions may occur during the injection process, such as local bruising, swelling, itching, and redness. These side effects usually subside gradually within one to two weeks after injection and do not significantly impact physical health. However, if the injection is performed improperly or non-standard products are used, more serious complications such as infection or allergic reactions may occur.