My skin is somewhat oily and this primer works really well to control the oil breakthrough for hours. I apply a generous amount after serum, eye cream and moisturizer and this primer keeps my makeup fresh for quite a long time. Normally, I need blotting papers after a couple of hours but when I use this primer, I can go half the day without a touch up. It goes on very smoothly and is obviously silicone based, which isn't a problem for me. My foundation goes on very smoothly over it but I find I get the best results when I let the primer set for a few minutes before using foundation. I also set my foundation with powder and I find I use less when I use this primer. I don't like a truly matte finish, because I think it's aging, and this primer doesn't give me a flat finish but it isn't exactly dewy either. It's more of a satin finish, which I really like. If you want a truly matte finish, I recommend using Bliss mattifying pads on the T zone before using the primer. This will give you double the oil control benefits and is a great two step treatment for the humid spring and summer. I do this routine when the weather is at its hottest and this seems to work great. My former primer, Lorac Porefection, doesn't do quite as good a job controlling oil as this Hard Candy product. And I can't believe I've found a better brand for all of $8!! I saw this primer at Walmart and I've heard good things about the brand from posts on the makeup board so I figured it was worth a shot. It certainly wouldn't break the bank if it didn't work out. But I was pleasantly surprised at how well it works so it's become my number one go to primer ever since. I've tried many more expensive primers and none of them has worked this well. Granted, I use a bit more of the Hard Candy product because it's not as slippery as some of the more expensive brands, but that's not an issue when it's only $8! I apply a generous amount to my T zone and less on my cheeks and my foundation glides right on without a hitch. I really like everything about this primer and highly recommend it if you have oily skin. My skin is also quite sensitive and I've never gotten a reactions from it at all. It has no obvious fragrance, which is something I'm very sensitive to. Whatever the ingredients, they work really well to control oil breakthrough for many hours. I'm really glad I don't have to worry about super shiny skin when I use this. Try it! You'll be glad you spent a whopping $8 on such a good product.