This has been all the rage on the parenting fb board, so I tried it. It is pretty damn awesome, I must say. I am an oil slick by the end of the day, and this keeps it at bay pretty well. Erases the need for primer and foundation (unless you want a heavier coverage)
Oh also, you don't have to worry about matching color. It comes out sort of grey-ish, but then magically matches. After I use that, I do a touch up w/ BE well rested under my eyes, and then MUFE HD powder over the top to set it. Stays all day!
Then I bought the samples on vacation instead of my regular foundation. Win! I use the Garnier roller under my eyes and top with Tarte Smooth Operator.