Some fillers like hyaluronic acid, tend to absorb water within one week of treatment, causing some concern in patients who may not be aware that this may happen. The swelling is generally more obvious in the morning and can be improved by gentle pressure or a mild cold compress.
For cases in which there is overfill, hyaluronic acid fillers such as Juvederm, Belotero, and Restylane can be dissolved by a doctor using hyaluronidase (a naturally occurring enzyme found within our skin). When hyaluronidase is injected into the affected areas, it breaks down the hyaluronic acid rapidly, helping to correct the overfilled areas.
I would recommend going back to the doctor who did the treatment for a thorough assessment.
You can find more information about dermal fillers in my article here
Cheers,
Dr. Terence Tan