Re: Best Foundation Primer (oily skin)???
You're not gonna believe this, but the best makeup primer I've found so far is actually a sunscreen.
http://www.niadyne.com/ - This is a completely mineral based sunscreen and contains 5% pro-niacin, which promotes skin barrier repair. Because it's physical, I don't have to worry about the stability of it like I do other types of sunscreen. It has a nice, light texture that goes on a little white, then fades to a fairly matte finish. It contains silicones that leave a beautiful canvas for makeup application. It's truly a 2 for 1 in my book!
Another great primer that also offers sun protection is made by Becca, although that's getting difficult to find. Sephora stopped carrying it
HTH!
Athena
Edited to add: I should note that whatever primer you choose, it's bound to contain silicones. The "slip" in silicones creates the nice, smooth surface for your makeup application. Be sure to cleanse your face at night with an oil-based cleanser and follow up with a clean microfiber or standard washcloth to remove all traces of silicones EVERY SINGLE NIGHT. Silicone build up can clog pores, prevent skin from breathing. With oily skin, I've learned it's best to let the oil flow to prevent flareups. End of diatribe!