Where to buy: Sephora.com, UrbanDecay.com, etc This product gets a huge "wow" from me! I have super oily skin, and had about given up hope on finding anything that would really control my oil...until I found this stuff (and the De Slick In A Tube which I also posted a rave about). The bottle is 4oz, so I figure it should last awhile. The instructions say to spray on before makeup application, then again after applying makeup. I put on my primer, use the setting spray, do all my makeup, then use the setting spray again. It's a pretty fine mist, and only takes a couple minutes to dry at the most. This morning, I actually forgot to use the setting mist before putting on my makeup, so I only got to use it after makeup application. I'm still surprisingly almost totally shine-free, even though I skipped a step! I normally have oil breakthrough by lunchtime, but this product has totally taken care of that. My makeup stays on longer, and there is no shine breakthrough at all. I also sometimes dab a little of my De Slick In A Tube on my TZone after the final mist of the setting spray, just for some extra insurance. My makeup is now surviving through the work day, and well into the evening hours. I've been amazed at how great this product is working for me, and I'll definitely be buying more when I run out!