Moisturizer under makeup?

[babyleese]

I've recently been using a sample of MAC P&P SPF50, which has been AWESOME at keeping my makeup on, the oilies at bay, and my face matte, but I have a sneaky suspicion that if I use this continiously, it'll dry out my skin.

Can anyone recommend me a good moisturizer for combo-oily, *very* acne-prone skin that will work well under MAC P&P and makeup? (preferably one that's available in Canada)

Thanks!