I think it's definitely worth applying it wet because it seems to stick to the eyelid better when applied wet. I usually use a primer or base too and that helps the pigmentation and also the longevity. MAC promises up to six hours wear out of these and while it did last longer than that on me, it was only because I wore it wet and with a good base - definitely worth baring that in mind. I think this shade would be so good for creating a really dramatic wet look eye as well as using it to darken out any other shades.
MAC Extra Dimension Eyeshadows retail at £16.50 each from MAC counters and online.
What do you think of the In Extra Dimension collection? Are you rating these eyeshadows? Do you think you'll pick any of them up - there's ten in total! Let me know.
Disclaimer: I bought this with my own money but I do have a MAC Pro card which meant I didn't pay full price.