How do I get rid of line of demarcation? (Photo)

I suggest seeing a cosmetic dermatologist who not only does filler injections but is a facial contouring expert.  There are many ways to blend this with other fillers or dissolve some of the fillers you already have in there.  Best, Dr. Emer.

Thank you for your photographs and questions.  I can see your areas of concern, and I would recommend you use your remaining restylane along your lower eyelids/upper cheek to better smooth this transition.

It is difficult to see exactly what the area of demarcation you are referring after your filler with Juvederm Voluma. Is the line a:1)  An area of depression--if that is the case then additional filler may be useful.2)  It is a change of color-  This may of been present before filler and more apparant after filler.  There is a chance the filler was placed too close to the skin causing a color issue.  You will need an exam for a definitive answer.  I hope this helps.  

I cannot tell from the photo if you are still swollen or the injections are a little too high in that area.  I would wait a few weeks from the initial injections and then return for a small amount of filler to treat and correct that area.  Best, Dr. Green

The line that you are describing is hard to see in the pictures.  Your Voluma results look good and your cheeks have nice volume and shape.  I agree with the other doctors that injecting a bit more Restylane into the medial tear trough area under your eyes would likely help to make your skin as smooth as possible.