This photo shows that there is either some loss of the soft tissue in this area or a concavity in the underlying bone or skull.  It does not matter which one however.  Any of the fillers would work well to restore the contour of this area.  I prefer Bellafill as it is a long term solution for this problem.  Many injectors are hesitant to inject in this area because of concerns of causing a vascular injury but if the filler is placed down deep against the bone there very little chance of any complications and a very nice result should be obtained.  There is very little room for error in this area so be sure to see someone who has experience injecting this kind of problem especially if Bellafill is chosen for this problem since it is essentially a permanent filler.