Filling dent in face caused by the removal of filler? (photos)

Without photos or still better an in-person examination, I can only comment in the most general of terms. Indentations in the face, originating from scars, traumatic wounds, or in this case apparently from the removal of a prior filler, can be treated by the appropriate injection of a volumizing filler with a robust lifting capacity immediately beneath the depressions. It might also entail the prior use of Subcision.In my Upper East Side Manhattan practice, my choice of volumizers would include Radiesse, Voluma XC, or Perlane L. (In my Israel satellite facility, where a far greater number of regulatory agency approved volumizers and fillers are available, these would likely be Tyosyal Ultra Deep, Emervel Volume and Restylane SQ). In order to determine how best to proceed, it would be wise to seek consultation with a board certified aesthetic physician. 

Without seeing photos or better yet in person, it is difficult to say. Best of luck with your issues.

Your friend may be right, but it's hard to know without seeing a photo. In general Juvederm tends to be a thinner filler and actually it can have a translucent color if filled too shallow in the skin. So using a thicker HA filler like Restylane, or Perlane, or perhaps even Voluma might be better choices. If you can post photos we may be able to offer more advice. "This
answer has been solicited without seeing this patient and cannot be
held as true medical advice, but only opinion. Seek in-person treatment
with a trained medical professional for appropriate care."