Bruising may happen after cheek fillers. Though, patients can prevent it by limiting caffeine before and after the injections, choosing the cannula injection method, and avoiding anti-inflammatory medications for a few days before and after the treatment. While this does not guarantee no bruising will appear, it can help it be less severe and not last as long.
Side effects of cheek fillers tend to be mild and similar to any other injection received. If they occur, they generally subside quickly. Possible side effects include:
Bruising
Swelling
Redness
Pain
Soreness
Itchiness
Tenderness