I was given this product for a secret santa a while back and have used it quite a lot over a long period of time. The only other eye lid primer I have used was one by benefit which was more like a concealer and primer in one.
One of the things i really liked about this product is the tube and applicator, it makes applying to the eye lid really easy. I also liked the slightly pearly sheen it left on my eye lids.
I was a bit disappointed in the lack of staying power it provided for my eyeshadow. However, it extended the wear longer than I would have gotten without it, but didn't prevent creasing. Maybe I'm being fussy as my last primer did prevent creasing.
It is also slightly thicker and gluggier so it made blending a bit harder, although, if you spread it around with your finger tip to thin it out it seems to be easier.
Overall it's a reasonably good product for the price, and if anything, it provides a really nice pearlescent base for your eyeshadow.
I dont hate it, but its not really my favourite. BUT for the price $3 on iherb you cant complain and it does stop creasing so thats a plus. On a down note, its quite thin and didnt effect the actual look/out come of my eyeshadow aplication, which is why I brought it. But its good to make the shadow last longer, I do however like the more expensive primers over this but its to be expected as you get what you pay for in most cases.