I have been using this primer off and on for a couple months now, I am going to list my pro's and con's.
PROS: Smooth's out pores/ minimizes pores. Is a silicon feeling instead of a cream (which I do find works better for smoothing the skin out). There is a lot of product, my bottle feels almost full.
CONS: Because it is a silicon feeling primer it can get heavy if you accidentally use too much. Tends to look greasy with certain foundations.

Overall because I have already purchased it, I will use it as it is a decent primer but I wouldn't repurchase as it does tend to look oily at times, more so in the warmer months. I have combination/dry skin in certain spots but my whole face isn't dry so it can be overwhelming at times when my skin is cooperating. I do recommend this to people with dry skin as it smooths down flakes. People with oily skin stay away, you may bend up looking overall oily. Again, this is based off of my experiences with this product, I do use liquid foundation and it may work differently with powder.

don't get me wrong, this is a great primer. but it's not worth it for the price ($22). it is very similar to smashbox photo finish (which isn't worth it either). that said though, there are quite a few drugstore dupes that perform just as well if not better. a drugstore practically identical to this is palladio's herbal foundation primer (about $11). http://www.chickadvisor.com/item/palladio-herbal-foundation-primer/