Best under-eye cover: Bobbi Brown Intensive Skin Serum Corrector
Dark circles is probably something that troubles most of us. But unlike lines and puffiness, circles are the hardest to remove...even impossible to completely get rid of, if they're genetic. Luckily, there are enough products in the market that help us cover these circles without looking fake or forced. Among these products I really like Bobbi Brown's Intensive Serum Corrector, which can come in any shade ranging from peach to orange to even reddish depending on the intensity of your circles. It is a colour correcting base for circles (orange and peach tones brighten dark spots), over which you can apply concealer. Bobbi Brown also has a matching Intensive Skin Serum Concealer, which is quite good, but if you have to get one product out of the two, make it this one. You can always use your present concealer over this.
The Corrector single-handedly reduces the appearance of dark circles and provides an excellent base for makeup to glide on to. I sometimes just wear the Corrector without the concealer and I find that works very well. I prefer this to Bobbi Brown's creamy concealer and corrector because this never settles into fine lines. It's so natural that it looks like perhaps you're wearing no makeup at all.