1) Hyacinth eye kohl pencil - I got two of these when they came out and they have such a nice, steel blue color, but they are chunky and do not go on smooth at all! So lame. The tarnish shade kohl works great, so maybe it's just the hyacinth one?
2) Zoomlash - So inky and takes ages to dry, gets all over my eyes when applying, clumps like mad and doesn't seem to do much for volume.
3) Creme d'nude lipstick - I don't know if this is true for all cremesheens, but this one just would not apply evenly! Even with a lipliner and primer, it still sucked and usually lipsticks all work really well on me, even the matte ones. I use lip balm religiously. This one just kept slipping around and giving me a dry lip look.
4) Glitter - Overpriced face confetti, if you ask me. I guess the finely milled ones are alright if you are into that stuff, but the bigger chunky ones are not worth it.
5) Most brushes - I have to admit that their brushes are nice, but they charge way too much for some things you could probably find for much cheaper elsewhere (including other big brands). Now, if they have a specific brush that's unique and you'd get a lot of use out of it, I say it's worth it, but otherwise, I wouldn't buy too many of their brushes.