Vitrase can be used to dissolve Restylane if you are unhappy with the treatment. It is always better to under-treat the area and return in one week to see the effects. The tear trough is a very delicate area of treatment. For the best cosmetic results please find a board certified physician with experience with cosmetic procedures.
Hyaluronidase (a.k.a. Vitrase or Wydase) is an enzyme that dissolves hyaluronic acid (HA). This works on all HA fillers, including Restylane, Perlane, Belotero, Juvederm, and Voluma. The dosing is inexact, however. In addition, the enzyme works on the normal surrounding tissues as well as the filler material. So, if higher doses are used, this can cause dents or unevenness. If it has been 7 months since your injections, it may be better to wait a little longer. Most of the filler should be gone by 9 - 12 months through normal absorption. Best of luck!
Restylane can be removed with hyaluronidase. I always use minimum amounts, especially if I didn't do the original injections but am trying to fix someone else's work. Dents will occur if too much is injected, or it's injected into an area where there isn't Restylane because the product can remove some of your own hyaluronic acid. It is always best to be conservative and have it done more than once, than to overdo it at the beginning. Remember that taking out filler is just as much an art as putting it in to begin with!
"This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."