Have you changed your routine or diet in the last two months (i.e. extra stress, less sleep than normal).  As far as concealers are concerned I'm a big fan of Narcissist from W3LL People.  Also check out this article on highly rated concealers (from our reader reviews).

I love these concelers

Maybelline Double face perfecter (highlight and concelaer)- $10

benefit erase paste(pricey,but worth it)-$26

almay line smoothing conceler- about $6

Ulta conceler tip and highlight- $14

hope that helped!!

usually when under eye circles stay for two months or longer, it may be permanant.

Try using raw potatoes.  Dab potato extract on your eyes with a cotton.  Have been doing this for years and it works well.  It's a great alternative if I ran out of my Omorovicza Reviving eye cream.

I had dark circles and it turned out to be an iron deficiency. Other symproms were very dry lips and nails that broke easily and had ridges. I also craved eating ice cubes! All gone now that my iron (ferritin) levels are back to normal. You might want to get your blood checked. Good luck!