Back in the summer of 2007 my little sister (in-law) and I were browsing though Ulta trying on lipsticks, blushes, and eye shadows - the usual. A beautician who worked there came up to us and asked if we had ever tried Urban Decay Eye Primer Potion. We both said no, but were instantly interested. She went on to explain it's a primer like you'd use for your foundation, but it's for eyes. We tried it.
I remember us driving around in my car later on that day, pulling down my visor, and looking at my eye makeup that looked as though I had just put it on. At that moment I was hooked. The next day I went back to Ulta, bought the primer, and have been using it ever since.
It's a great buy! You makeup stays put and fresh all day, there are absolutely no creases, and this tube lasts forever! They have even started to make new variations of this product - they have a clear (the one above), a tawny matte colored one, and a shimmery champagne colored one. AND for those of us who really love it, there is now a big-girl sized tube.
Whichever one you choose the point is that this product is worth every penny if you have problems with eye shadow creasing or not lasting throughout the day.