I have been using the Urban Decay Primer Potion eyeshadow base for sometime now, but am now running low and was looking to purchase a new primer. I went to Target and saw the E.L.F. eyeshadow primer and decided to give it a try (it was only $1 so if it didn't work it wouldn't hurt too much).
The UD Primer Potion is a great primer,but I was looking for something that worked just as good, but that costs less without compromising its quality.
One obvious difference between the two is that UDPP is thicker than the ELF primer. However, once they are applied, you can't tell the difference between the two.
I took a very pigmented eyeshadow and applied the shadow over both primers. As you can see, the left-hand swatch is using UDPP, no primer was used on the middle swatch and on the right-hand swatch I used the ELF primer.
Honestly, I see no difference between both primers. Both did a great job at making the eyeshadow color pop.
If you want to save some money, get the ELF primer. If you want to splurge, then get yourself the UD primer potion. The choice is yours since they both work just as well.
The UDPP cost me $18, if I'm not mistaken. The packaging has changed and now the amount of product is 0.37 oz instead of the 0.34 oz that was in the old packaging. The ELF primer cost $1.