I do apologise if the next two pictures frighten the life out of you, I just wanted to give you an idea of how well the concealer covers dark circles:
When you purchase Erase Paste you also get a little booklet which gives you some tips on covering all different problem areas such as under eye circles or blemishes. I think this is a nice little extra.
You can purchase Benefit's Erase Paste from their website and it costs £19.50. I know I'm repeating myself here but I can't stress enough how you only need the tiniest amount of product when using this. The price may seem high but I guarantee that it will last a long while. This is without a shadow of a doubt, the best concealer I have ever used.