Is It Safe to Inject Hyaluronidase on Several Areas?

Is hyaluronidase safe to inject into many areas of my face to dissolve Juvederm injected 6 months ago? Six months ago I had Juvederm injected into several areas of my cheeks to try to improve the appearance of rolling and other atrophic acne scars. Though a few scars improved after the procedure, several more look more pronounced, as the Juvederm seemed to settle around the edges of the depressed scars leaving a crater or donut-like effect around many scars, which still remains today. Rather than having one isolated lump to consider injecting with hyaluronidase, I have a subtle amount of added volume throughout my face, especially around the borders of scarred areas. Is hyaluronidase safe to inject into several areas of the face to dissolve Juvederm injected 6 months ago? I'm afraid that hyaluronidase could break down my own natural collagen as well, and leave me worse off than I was pre-Juvederm. Is this possible? But I have heard that this Juvederm product can linger for well over a year sometimes, and don't want this worsened appearance to last that long.