Fat atrophy after steroid injection. Is there any treatment that is safe and effective? Would a filler stimulate collagen in the

Filling in depressions can be done by temporary fillers or by more permanent means such as implants. Everything is done under local and is so worth looking into.

There are a number of options to treat this problem. Fillers such as Sculptra, and Bellafill can be used to stimulate collagen growth. Autogenous fat (your own fat) can be injected in this area to add volume. You didn't mention about your residual acne scarring but there are new devices and techniques that can help with this as well. Good luck

This is not a straightforward case and requires an in-person consultation and evaluation. Fillers and collagen stimulators such as Sculptra can be used to improve the appearance. Make sure you see an experienced physician. Best wishes.

This is difficult to answer without pictures and needs an in-person evaluation. Sculptra is a great product for improving facial volume and collagen building, but for best results, I recommend using it in a combination depending on desired results. I combine Sculptra with other fillers, lasers, toxins and skin care to give immediate results. Cost will vary. See an expert. Best, Dr. Emer

There are some options to filler the depression. Sculptura, HA Fillers are all good options. You may need subcision If scar is depressed

we occasionally see a divot on a backside after someone has received a steroid shot. This is due to persistence of the crystals in the area 
flushing the area with bacteriostatic sodium chloride every 2 to 4weeks will wash out the crystals and correct the atrophy 
a depressed area on face after a steroid injection can be due to the same thing and the treatment would be the same
 if it is due to a scar from of the cyst then fillers such as bellafill can be injected to correct the depression

Thank you for your question. It is difficult to give you a good answer without seeing you. Certainly dermal fillers or collagen stimulating fillers such as Bellafill or Sculptra may be of benefit. Another option would be micronized fat transfer (ALMI) which is rich in regenerative cells. Best to seek a consult with an experience aesthetic physician.
I hope this was helpful - Dr. Moore.