Wrinkled under eye area after Hyaluronidase: any remedies?

The best way to treat volume loss after Hyaluronidase treatment is with the use of fat grafting. Fat grafting should produce natural and permanent results as long as the procedure is done by a a plastic surgeon with a lot of experience in fat grafting techniques.
Additional laser resurfacing may need to be done in some cases. It is difficult to tell exactly what would work the best Without a photograph or an in person consultation. I hope this helps and good luck from New York City Plastic Surgery.