Believe it or not a brand called Physician's Formula has a product out called Magic Cube. And they're yellow color concealer does wonders for dark undereye circles. Harper's Bazaar voted it one of the best concealers for dark undereye circles available in the market! I've tried tons of brands (BeneFit's Boing concealer, Cover Girl, MAC Studio Finish, Dior Skinflash, and Chanel) and agree 100% that Physician's Formula Magic Cube is a damn fab concealer and does its job damn well! It's hard to find though. The last time I checked London Drugs doesn't carry it. I get mine in the States when I go down there. Buy it and let's see if it works for u too!