Hyaluronic acid injections have become one of the most popular cosmetic procedures in recent years. They effectively reduce wrinkles, improve skin condition, and enhance facial contours—offering convenience, speed, and noticeable results. Some individuals feel anxious after treatment, worrying that any unusual symptoms indicate failure or severe complications.Below, the editors at Public Health Network analyze five common symptoms after hyaluronic acid injections, so you won't panic if you encounter them in the future.
Redness, Swelling, and Tender Discomfort
Theoretically, there should be no pain half an hour after the injection. However, some individuals may experience a sensation of tightness or tender discomfort at the injection site due to the skin being stretched. This is a normal phenomenon.However, if persistent pain lasts beyond 24 hours or swelling/bruising shows no signs of subsiding after 7 days, seek immediate medical attention.
Unnatural Appearance
This may result from over-injection. Generally, more hyaluronic acid isn't better—skin has its tolerance limits. Excessive amounts not only look unnatural but can also lead to tissue necrosis.It is advisable for patients to follow their doctor's recommendations for any procedure and avoid excessive treatment.
Unevenness
Mild unevenness immediately after injection is normal and typically resolves within a week. However, if the area remains uneven after more than half a month and does not improve with gentle pressure, it indicates a failed injection.
Lumps
Feeling firmness upon touch for about a week after hyaluronic acid injection is entirely normal, as the filler has not yet fully integrated with the body's tissues. This temporary stiffness will gradually soften as absorption occurs. If noticeable lumps develop alongside inflammatory reactions like itching, seek prompt medical attention.
Embolism
If hyaluronic acid enters a blood vessel, it can cause an embolism. Without prompt treatment, this may lead to severe consequences such as skin necrosis or even blindness. This complication is more common in unlicensed, illegal cosmetic clinics where practitioners lack familiarity with human anatomy. Receiving hyaluronic acid injections at a reputable medical facility can prevent such risks.