Hyaluronidase: how many treatments required to dissolve restylane lyft in tear trough?

I have had hypersensitivty with restylane lyft injected in my tear troughs- 0.5ml in each . Every couple of weeks it swells up very visibly in the night and becomes inflamed, taking several days to resolve. It always comes first under my left eye, then migrates to the right. I've been treated 3 times with hyaluronidase. This has greatly lessened swelling, but it still reoccurs every fortnight as before, following same pattern. Is it normal to require so many hyaluronidase treatments? I