How to Treat Dark Circles Under Eyes Caused by Fat Injections?

I had fat injections under my eyes 2 years ago to correct hollowness which did not work. I am left with dark cirles that look like bruises. I am 31. I tried tretinoin and hydroquinone RX. What can I do now? Would Lasers help at all? Any suggestions to improve the skin color even a little?

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