How do I get rid of scar tissue under eyes after fillers (fat and juvederm)?

I recommend getting a formal evaluation with a facial sculpting expert. Lasers, microneedling/prp, rf treatments may give improvement. Best, Dr. Emer

I am sure you could get help from Plastic Surgeon who does fat transfer and is familiar with this type of complications. Since you have practically eliminated the possibility of filler accumulation with hyaluronidase injections there are few non-surgical options that may be considered. Steroid injections may help if scar tissue is the problem, not so much for fat. I had very good luck with using radio-frequency for the same problem in the same location and in the lips. I used Exilis but in a very modified manner. It is a very small surface area to heat and little room to "escape" with the probe. Since the fat residual is most likely mixed with, or surrounded by, the scar tissue it requires different handling to achieve high enough temperature in this very sensitive area. You can almost eliminate discomfort and reach high temperatures by pre-injecting the area before the treatment. Good luck!