Is use of Hyaluronidase safe to dissolve Belotero in the tear trough?

I had Belotero injected into both tear troughs in December. Immediately following treatment I noticed a bag under my left eye. It’s been five months and I’ve not noticed any improvement to the area. What are the risks of using Hyaluronidase in the tear trough area? I’ve read horror stories of people who've had this treatment and claim to look worse permanently, however I fear that at the current rate of dissolution, I'll be waiting more than a year for the Belotero to dissolve naturally.