I was skeptical at the beginning since the price was so low, but once i started to use it i was totally blown away!! Its an amazing primer... works perfectly on a daily basis, and it doesnt crease. I love the color and it doesnt mess up with my shadows.... I used in the past Urban Decay but now i will buy this product over and over again.

This stuff seems to be UDPP in a cheap little tube!!! It's great! I paid a dollar and for a dollar I was blown away. Anyone can wear it and its works alllll day for no creasing!

I've purchased this three times. I need to purchase it again today. I use it every single day.
I can't compare it to UDPP because I've never used that, but I can say that this miracle stuff works wonders on my extremely oily lids. I use it under everything, including cream shadows (even MAC Paint Pots) and it helps my eye makeup stay put for hours and hours. After a 16-hour day, I start to see a teeny bit of creasing, but it's nothing I can't even out with my pinky, and my liner stays perfect (as opposed to smudging and smearing onto my crease).
And it's $1! ONE DOLLAR. Seriously, how can you go wrong? I've used other primers that didn't hold a candle to this and cost literally ten times as much.
I've also used the $3 mineral primer from ELF and while I do like how it performs, I don't feel it's quite as much of a winner as the plain ol' $1 version. This stuff just cannot be beat. I will use this as long as they supply it.

I used to use urban decays eye primer, until I got smart and started using this. On a whim I bought this (its only $1, why not?) at target, and I'm soooo glad I did. This makes my shadows last all day or night, whichever I'm going for, which is unusual for my oily skin. The only problem is that the lid to the container always breaks, but is still usable. I can't complain though, the product alone is well worth more than $1.

I love love love this product! I compare this to UDPP, and this totally tops it! I consider it the same product as UDPP but in different packaging and a price that won't leave your pocket empty. Don't bother with UDPP, and get this! Prevents my eye shadow from creasing or wearing off, and makes it last all day long without looking oily. It's a wonderful dupe and I will never repurchase UDPP again. It's worth the try for only a couple dollars.

EDIT: I tested this out one day and applied it to only one eye, while I used my HG primer (All Natural Face Vegan E/S Primer) on the other. The eye with this primer definitely had faded and creasy eyeshadow. This just doesn't work for me, knocking it down to a 1.

ORIGINAL: I prefer the mineral primer over this one, but it's not bad by any means.

Pros: keeps shadows from creasing for about 7 hours
keeps shadows pigmented for about 5 hours
Cheap!

Cons: very orange? Not sure if it's just me, but this is not a neutralizing color on my lids.
Formulation is very wet.
Takes a while to blend in.

I've used UDPP for years, but I bought this on a whim after liking some other e.l.f. products.

It's really worth buying since it's only a buck. I've been using this for normal days, and I only bring out the UDPP for special events and whatnot. I'm a grad student so it seems ridiculous to spend all the money on UDPP just for my makeup to go to class. e.l.f. primer is nearly as good!

I bought this on a whim looking to try an eyelid primer because my skin is so oily and anything I put on my eyes have a tendency to slide off by the end of the day. I've heard good things about Too Faced and Urban Decay, but this inexpensive one does the trick! I was a little iffy about it when I first bought it since ELF's waterproof eyeliners haven't done much good to my incredibly oily face and their shadows tend to fade throughout the day, but this is amazing. It works, although from time to time I do need to add a little finishing powder on top just to keep them matte.

I always wanted to try out an eyelid primer so I thought why not go with this. I put it on and the eyeshadow looked waaaay smoother. Also it did helped my eyeshadow stay all day which I LOVE!! People who are thinking of trying this, GO FOR IT! The only bad thing is that the packaging kind of sucks. My cap broke off but I can still use it. :)

Why have I waited so long to try an eyelid primer?? I really didn't buy into the need for them so I've never tried any. I figured I would start with a super cheap one since I didn't expect much anyway. Imagine my suprise when I dabbed this stuff on, smoothed it out, let it dry and had a brand new experience applying all of my same old eye shadows. Colors go on truer, and a little richer, they blend more easily, crease less and stay in place all day! It doesn't matter if I use one of my cheapo shadows or expensive brands, they all look better and last great! So, maybe some day I'll try one of the pricier brands but for now, I don't see why I would as there doesn't seem to be any improvement needed over this $1.00 product. Sweet.