Restylane Bruises Still Not Healing After a Year

As the other panel members mentioned, you may be experiencing the Tyndall effect wherein the product placed too superficially creates a bluish hue under the skin. This may be remedied with Hyaluronidase injections to dissolve the product. However, be prepared to also lose any benefits that you may have received from the product as well.
Another possibility is that you may have experienced hemosiderin staining as a result of profound bruising to this area. We've seen this on a couple of occasions in response to injectable treatments. This may be addressed with class IV medical lasers.
Your best option is to be evaluated by a practitioner that may assess your condition and provide you with good feedback.

Dear Mgigi,
I have seen bruises at 8 weeks, but not much longer. This includes very extensive surgeries, not just with Restylane. Could you have a bruise this long out? A personal examination would be very helpful. However, even better would be to compare your before and after photos.
There are a number of things that can contribute to a darkening in the skin. Sometimes things that were actually present before a treatment are not attended to until after a treatment. In which case, it is the duty of your treating physician to point them out.
A severe bruise could result in hemosiderin staining but this is actually very unlikely. As Dr. Chen pointed out, if Restylane was injected too superficially, this can appear as blue deposits under the skin and might be interpreted as a bruise.
Consultation with a cosmetic dermatologist or a cosmetic eye plastic surgeon is recommended to determine what is going.
Hope that helps.

It is unlikely that you have persistent bruising from the restylane almost a year after injection. Although there have been reports of superficially injected product that lasts more than a year.  See your doctor.