Urban Decay says:
When the oil production of your face rivals a small OPEC nation, you need a mighty ally. De-Slick uses innovative oil control that both absorbs excess sebum and controls surface shine. The problem-solving formula mists on, feels weightless, and sets makeup so it lasts ALL DAY. Its light dispersing particles deflect shine and deliver a matte look for up to 16 hours. Really.
4 oz. for $29
In one word...amazing. The Urban Decay De-Slick Oil Control Makeup Setting Spray has worked wonders for my oily skin. I've been using it for about a week now and have no complaints. I spray it on before I start my makeup (as in before my brows, which I do first) as well as after I finish my entire face (foundation which I do last). This ensures that everything is set and protects from the oils my face produces during the day. Normally I start getting super shiny around the 3 hour mark but with this spray, I don't need any touching up until I hit the 6th or 7th hour or so. So granted my makeup doesn't last 16 hours, but 6 is good enough for me. Plus at the 6 hour mark I still don't need touching up, it's just when I start noticing shine. It kind of depends on what foundation I use though. With my MAC Studio Fix Fluid I need touching up at about the 7th or 8th hour (sprayed before AND after foundation). With my MAC Pro Longwear (still deciding whether I love this or not), I need no touching up until the 10th hour or so (spraying only after foundation).
On Twitter, I've had a few people rave about this product as well. However, I've also had some rant about it. Everyone is different and each person's skin will react differently to products. I personally love this stuff though. It's amazing!