I thought a starting a thread about concealers might be fun.

What are your favorite concealers?

Also, I am on the lookout for a concealer that I can use for under eye circles. My skin is extremely dry and is a very light shade. It's usually hard to find a shade that is light enough unless I go to a makeup counter. Right now I'm just resorting to use Mary Kay full coverage foundation under my eyes, but the makeup seems to be settling on top of my dry skin rather than blending into it. Any suggestions?