Restylane Swelling and Lumps on Nasolabial Fold

As the other panel members mentioned, Hyaluronidase may be a good option to dissolve the lump or product. Dermals fillers such as Restylane and Juvederm respond well to this antedote. Keep in mind that you may also lose any benefits that you've received to this area if Hyaluronidase is injected.
Most importantly, it's important to address this concern with your practitioner so that a proper assessment may be made as well as providing you with options. Prolonged swelling is concerning, but you may just have a collection of product that appears as swelling.

If you have persistent swelling and a lump from a filler over a month old, you may want to see your doctor and perhaps get it dissolved.

Restylane is a very popular and effective hyaluronic acid-base dermal filler. It has been used widely throughout the face for the correction of deep lines and wrinkles. In our practice, we commonly tell patients that they may experience a small amount of bruising and swelling in the nasolabial folds. For this reason, we provide ice packs that they can use for the first 2 to 3 days to help reduce the swelling. As you continue to heal, this bruising will resolve on its own.