I Have Dark Discoloration Under my Eyes 3 Weeks After Restylane, is This Normal? (photo)

From the photo's you've posted, it's difficult to determine how much of the discoloration is your pigmentation versus possibly the product. I would return to your provider for further assessment and discussion of treatment options for that area.

   Any darkening noticed after filler placement in the area of bruising will usually go away over a period of months.  If this is hemosidering deposition, then I would leave it alone for now.  It is a bit difficult to tell from the photos how much is pigmentation vs a change in lighting conditions.  If there is residual product, hyaluronidase can be injected. Kenneth Hughes, MD Los Angeles, CA

From the photos it seems like it coould be a combination of product (Tyndall effect) and bruising resulting from the injection. Give it several more weeks and see the doctor who did the procedure for further guidance - hyaluronidase or letting it resolve spontanously.

This "dark" effect after Restylane is becoming more common. As to cause there are choices: The Tyndall Effect, Hemosiderin deposits, a small bleed, very thin skin with light reflecting. So best to return to the injecting doc. Treatment could be more filler, dissolve filler with HAidase, or allow metabolize of HA injected. 

It is possible that some residual of bruising is still present and needs more time to resolve. It is also possible that rubbing could have caused this. Also, your skin looks darker in later photos. That might just be photo quality but if it is sun, then you might have some darkening from that.