Over a month ago I had three cortisone injections to treat the cystic acne on my chin. A week later the area that was injected became indented. I have since tried a vitamin C serum (30%), niacinamide and retinoid, however none of these products have helped and there are still visible dents on my chin. Is there anything else I can do to smooth the area?
The cortisone comes intiny crystals that are reconstituted in saline so that it can be injected. They lodge in the skin and cause the atrophy. It takes about a month for the body to metabolize the crystals. After they are absorbed, the fatatrophy starts to refill. It may take many months, but in most instances it does recover.
You could also ask to try saline injections to try and flush the crystals out of the area.