Girls, there are make up concealment in stores from every brand covering Cover Girl, Rimmel, to every type and they have come up with dark eye circle concealment for people with dark circles under the eyes or have freckles that they want to hide. *it's cheap*
I don't usually have circles under my eyes, but if I stay up all night for something, I use it.
The brand that I really recommand is Rimmel. I have tried every other product and they either wear off in a few hours or it's too oily. With the Rimmel brand, it stays on longer and it doesn't get oily on the skin. I love their products.
The only thing that you have to do is decide what color your skin is and then try to match it up to their array sorted colors of concealment stixs.
Hope this helps