Some dermal fillers such as Juvederm, Belotero, and Restylane based on hyaluronic acid may be dissolved (at least to some degree) if you are not entirely happy with the outcome of the treatment. This typically entails injecting an enzyme known as hyaluronidase to dissolve the existing dermal filler. It is vital to work with a highly experienced plastic surgeon or injection specialist to minimize the risk of unpleasant outcomes with this treatment.