Sorry for the late reply. Here's what I do with the MoM:
This is for a skin primer:
Most dilute it so they don't get white streaks. However, I don't dilute it, I just apply it with a soggy cotton pad. If I get white streaks, I don't care, because I'm putting my regular makeup primer over it, so the streaks go away.
As a mask, just apply it to your face and let it dry, then rinse off. Again, when I did it as a mask, I let it dry and then just applied a light moisturizer over it.
I'm telling you, I was in shock at how well it kept the oilies away. I wish I had taken a picture of how my foundation looked at the end of the night both before and after I used it. The difference was amazing to me...and it actually did minimize my pores. A LOT, especially on my nose.