It doesn't prevent any type of creasing or reduce the size of my pores. I wore it on half of my face to compare between skin with primer and skin without, but both sides looked essentially the same and didn't wear any differently throughout the day. Without touching up with powder, I was still shiny and oily by the end of the day, so this primer is not any sort of lifesaver by any means. I enjoy that it allows foundation to glide on smoothly so you will use less product.
While testing it on half of my face, I did notice my blush/bronzer was still super intense on the side "with primer" by the end of the day, while the other side had faded a bit. Maybe I just didn't apply as much on the "no primer" side first thing in the morning, or maybe it really did help the rest of my face makeup look awesome all day.
-makes the skin look matte
-helps you use less foundation
-helps foundation blend smoothly over top
-maybe helped my blush/bronzer stay strong all day
-not color correcting
-doesn't reduce pore size
-doesn't control oil
-doesn't really help foundation look or last any better by the end of the day versus "no primer"
Overall, I would not recommend this if you are truly looking for a color correcting primer. However, if you just want an affordable primer to help your makeup apply and look better, maybe try it out.
Thanks for reading!