IMHO this is the BEST blue eyeliner out there! Fantastic staying power. Creamy and easy to apply. Universally flattering. I can't praise this eyeliner enough! Pairs well with the MAC liquid liner in blue (if you like liquid on lower, pencil on upper).
A definite keeper and must have item.

Prussian is the perfect blue liner. It's not too indigo, so it doesn't look too black. It's also not too bright, so it doesn't look fake and weird. I find this medium/dark blue to be very flattering. I also love the powerpoints, since they go on very smooth, and stay on all day! The color is a little lighter and softer than the Blooz eye kohl.

Just a gorgeous deep blue/purple creamy eyeliner. Stays put all day, doesn't tug/pull at my eyelid and is an all around beautiful color.

i'm an olive skinned brunette (NC30-35), and this deep blue liner looks so much better than black on me, it's easy to use, and it stays put!

I rarely do a blue liner, but when I do it's this one I reach for. I love the pigment of the color, not too dark or light...Good texture...It really gives a pop of color w/o looking crazed. Here's a tip: pair this up with a eyeshadow like Amber Lights and see how amazing it looks!

It's like Chanel Marine but better! A deep, dark indigo blue.
It's soft, so a thin line is problematic, but that's what I need - I like smudgey dark eyeliner. And unlike most smudgey dark liners, PowerPoints stay on.

I also like that MAC offers a lot of dark shades to choose from - pure black liner can be harsh on pale girls even if they have very dark hair (say, Dita von Teese), and brown is boring on brown eyes unless you have really warm golden coloring. I always seem to reach for some version of charcoal gray \ violet \ dark navy \ dark green, and nothing beats MAC when it comes to color diversity.

Besides, the price is good. Not especially cheap, yeah, but still cheaper than most good liners while holding up the same (or sometimes better) quality. And they are cruelty-free. :)

Prussian's a pretty purplish blue, and it really can hold its own- I usually just put it on as a dramatic, thick line on my upper lashline. I don't reach for it as often as Tealo, but it's still a great alternative to black.

Recently, i've been in navy blue smokey looks. Prussian is the eye pencil which i use to draw my eyes and after which i smudge it out as a base for my MAC flashtrack e/s for navy blue smokey eyes.

It makes a good base for my flashtrack e/s and when i use it to line my lower lash line, it stays budge proof for 7 hrs without smudging on me.

It's very lovely color. Highly recommended

Hmmmmmm, for a pricey pencil you can't really sharpen to a nice tip and does not last..nice color but the gold flecks make it look cheap...very disappointed

RIS this navy eyeliner in a swap. In recent months I'd become totally obsessed with finding the perfect navy eyeliner...I tried everything from WNW to Chanel without finding the perfect color & quality that I was looking for. This pencil is great! Even on my oily lids it stays put, and it's the most perfect deep navy color. It's far superior to Chanel Marine w/p eyeliner which I've also reviewed and which costs almost twice as much. Highly recommended!