I adore this eyeliner! It is so easy to work with because of its narrow tip, and I'm someone who usually has a tricky time doing my eyeliner since I don't have a very steady hand. This liner makes doing a cat eye super easy. I actually find this eyeliner even easier to work with than the Tom Ford one (crazy, I know!) As for as how it wears, I find that the Bobbi Brown liner wears well all day long and doesn't smudge, fade or crease throughout the day. It's a fantastic product! The colors are also super beautiful and more unique. I find that they add something extra to the eye without making it seem obvious that you're wearing a colored liner.