Honestly, it seems like all other glitter liners that I have tried. There's nothing aside from UD's name that would account for the price since the formula seems very similar to NYX, Wet n Wild, etc. The color, distortion, is nice because you can put it over the top of darker liners to add shimmer. I think I got this as part of a set, which offset the cost a bit, otherwise I would never have paid full price for it.
distortion adds such a nice sheen to the eye.. its so pretty.. if i havent got time for full liner, mascara, shadw, priming all that, i just put some mascara and this on the upper lash line.. voila! i have like all the colours.. then to add more drama i just add more and more =] pretty pretty