I love the stuff. Even if I wear no m/u one day I will wear that. It seems to keep everything matte smooth throughout the day. I went to concert awhile back and I wore that along with my regular stuff and it was HOT in there. My fiance was in there dripping with sweat and I was melting. But when we left and I looked in the mirror, everything was still in place and except for the blood shot eyes I didn't look like I'd been at a show.
I wouldn't use it as a moisturizer though. In fact it works best if you have like an AHA moisturizer on underneath otherwise it will highlight the flakes. It's silicone so it's meant to just coat the surface not be absorbed.