I've got this in both Black & Brown and this is the only gel liner I use. I have to work quick, because it dries quick. I haven't mastered a flick, but this eyeliner stays put all day. The black is a real dark black and the brown is just a nice subtle chocolate on me.
With all things, practice makes perfect so don't be daunted by this product when you first get it :)
I tired this in brown, the color is wonderful with green eyes for day or night, its much darker then in the jar, you can layer it a lighter touch leaved a nice brown, another layer will make dark black brown, this product will not budge until you take it off.
Tips: work fast as the product sets quickly,