I've been using Lancome's Effacernes for the last few days and it almost covers my dark circles on its own (call me crazy, but I was underwhelmed by the Bobbi Brown Concealer, Corrector and yellow powder). But, Effacernes with Bobbi Brown's corrector is great! You don't even need to set them with powder! However, I'm still not ready to call the corrector a holy-grail item yet, I'll probably test something else out when I run out. We'll see.