What can I use for dark circles under my eyes?

So, yesterday was the second time I caught an episode of 'What not to Wear' US version, and the makeup artist was covering up dark circles saying the best thing to do is to use a 'pink highlighting pencil.' And talked about how it reflected light. What she used didn't look like a pencil though, more like a lipstick-like concealer.

Once before, I think on that show, she recommended one of those light reflecting concealers so I tried the revlon Skinlights concealer. But I think that just emphasized the difference between the thin skin under my eyes and the thick freckly-type skin directly beneath. I do have some of the
skinlights skin brightening cream or bronzer, whatever it's called, in pink. I tried it once before and wasn't sure about the results, but maybe it was because I stare right at the circles and therefore don't think they've been concealed.
I'll give it another try.

Dark circles can be caused by dehydration. Are you drinking enough water and/or getting too much caffeine?

Prescriptives makes an eye concealer for dark circles and visible veins in pink ... specifically for camoflage. It's like a really thick eyeliner pencil. They also have them in green and yellow for other types of concealing. But the pink one is really good for dark circles and veins.

Strange, because this is the first I'd ever heard of pink concealer for under eye circles. They always said yellow and most lines sell a yellow concealer for that purpose.

I found this posted on a 'What Not to Wear' discussion board:

'The product Carmindy used is called "Eye Bright" by Benefit. You can find it at Sephora. I've used it under my eyes since that episode and it works great. You can also use it in the tear duct area to brighten eyes, as well as under your brow. It's pink, but subtle.'