Now let me tell you...
When I opened up that Urban Decay pack and started using the Primer Potion my life changed... seriously! Never have I applied my eye makeup, gone to work and still had it sitting perfectly on my eyelids when I get home 9 hours later... until now. The eyeshadow colours pop, the primer really grabs the shadow. The colour will stay and not slide off, so awesome.
Just pop a few dots of this on the lid area and blend and away you go!