I have this in black (on my second tube!) and dark brown and it's definitely my holy grail liquid liner! It has a lovely fine tipped pen that doesn't shed or start to fall apart like some do, and is absolutely fantastic for fine, precise lines.
It's a richly pigmented liner, the black is a true deep black which I adore. The precision and accuracy is fantastic for quick and easy liner looks on the go, and it really does stay put miraculously well compared to others I've tried. I can wear it for 12 hours plus and at worst it might wear a little in the inner corners. I've even slept in this bad boy, and the wings mostly flaked off but the rest was still going strong!!
It's not cheap, but I've found that it lasts a good long time and doesn't dry out quickly like some other liquid pens do (I'm looking at you, Maybelline!).
It also dries wonderfully fast, which is superb for those of us whose lash line touches their upper lids when their eyes are open!
This is a great liquid liner! My other liquid liner recently ran out and I had heard a lot of positive things about this one so I purchased it.
It is SO easy to use, I can literally do a perfect cat eye in about 3 seconds by angling the tip. I had a problem with my last liner 'running' into the creases of my eyelid sometimes but haven't had that problem with this one. It is blackest black and you only need to run it over once on your eyelid.
My last liner from Dollywink lasted me three YEARS without running out but that was just a freak thing I guess. I'm hoping this one lasts me a reasonable time without drying out, I only usually wear it when I'm going out on weekends. I have had it a month and a bit and it has already started fraying slightly at the tip which makes it difficult to get a precise point but it's not too bad atm. Just hoping it doesn't get any worse!