White Blanching After Facial Filler, Is It Permanent?

As other panel members suggested, the bluish hue is, indeed, a Tyndall effect which is a result of the product being placed too superficially.  Although Restylane is not blue in color (it's a clear gel), the way in which light is absorbed and reflected will cause this appearance. 

When actual blanching occurs during or shortly after treatment, this can signal interruption of blood supply and is considered an urgent matter.  Being that this doesn't seem to be the situation in what you are describing, the negative outcome of your treatment appears more as a cosmetic concern.

Apart from dissolving the Restylane with hyaluronidase, only time will slowly resolve the problem as the product naturally absorbs in the tissue over the next 4 to 6 months.

It sounds as if your concerns and dissatisfaction were not acknowledged or given options by your injector.  Thus, it may be time to find a practitioner that values the relationship and provides good outcomes.

Nothing with Restylane is permanent.  If you are not happy with a treatment result, it can be modified with the enzyme Hyaluronidase.  Find an injector who can modify your service to your liking.

The blue hue you are seeing is from restylane being placed too superficially. Dermatologists usually worry if we see blanching after an injections, because it's usually due to occluding blood supply to the area. It may also be due to placing the product too superficially. I would go back to your doctor and get hyaluronidase injection to fix these problems.