Side Effects and Complications
- Common Side Effects
- Localized Swelling: Swelling may occur in the cheeks after injection, which usually subsides gradually within a few days.
- Pain: Mild pain may be experienced during and after the injection. It is generally tolerable and typically disappears within about a week.
- Needle Marks: Pinprick marks may remain after the injection. These usually heal within a few hours to a day, though traces may be visible for a short period.
- Complications
- Hyperpigmentation: A small number of individuals may experience hyperpigmentation at the injection site, which generally fades gradually over several months.
- Infection: Infection may occur if sterilization during the injection process is not rigorous or if post-procedure care is inadequate. If symptoms of infection such as redness, swelling, fever, or increased pain occur, seek medical attention promptly.
- Vascular Embolism: Although rare, accidental injection of hyaluronic acid into blood vessels can cause vascular embolism, leading to serious consequences such as local tissue necrosis or blindness. Therefore, it is essential to choose a reputable medical institution and an experienced practitioner for the procedure.