I ordered this Etude house "Goodbye pore ever pore primer stick" on ebay. Since where I live there are no vendors that sell Etude house. Basically what this is, is photoshop in a stick. Wherever you have big pores/noticeable pores you rub it on there and its smooths everything out. It looks like a blur effect on your face, so that way when you put on your makeup it looks a lot smoother.
This is what the stick looks like without the cap on. It comes out clear on your skin so you don't have to worry about getting the right color. I've used this for the past week. I have not broke out or anything! I haven't noticed that it has helped keep my makeup on longer, but I have noticed that it helps my makeup go on smoother. You can even tell by touching it with your fingertip it makes you skin soft! I'm absolutely loving this product right now.