This is my first ever primer of any sort, and I really wanted to invest in an eyelid one since my lids get quite oily throughout the day and need something to keep the eyeshadow at bay.
This product is pretty average. I think it does a decent job at prolonging eyeshadow visibleness, but by the time you get home at night, it will definitely have dulled and faded (but this also could be contributed to my oily lids).
Another downside is the lack of actual formula in the tube. Literally not much inside, so for the normal retail price, I think it's a 50/50 on purchasing. If it's on sale, definitely get one for on the go.
Other than that, you probably might want to skip on this and find a more high quality primer, if it's within your price range.
I bought this on a whim after seeing it was only one dollar, and it has amazed me with its quality. I have fairly oily eyelids and I'm used to my eyeshadow creasing and my eyeliner smudging everywhere. When I use this, it holds everything in place for hours and I don't have to worry about looking like a raccoon.
Tips: I use this over my foundation/concealer/etc and blend gently with my ring fingers. You don't need a huge amount, but it will stick to any dry patches so make sure that you moisturise properly.