K.D.
J., my plastic surgeon told me that vitamin K helps the dark circles under my eyes while he had $100 eye products on his shelf that did the same. My dark circles were not really bad, just noticeable when I didn't wear make up or concealer. He suggested I get gel capsules of vitamin K and add it to my normal eye moisturizer and try that first. I did and it worked. Amazing!! It was not an overnight cure, but over a series of a few months I looked up one day and realized my dark circles were gone.
I don't know if it will help in your situation, but may be worth a try.