To be honest, I have avoided using eyeliners because I cannot make a nice, thin, even line with a brush or a pencil. Then I decided to try one of these new brush pen type liners and was positively surprised: These brush pens are so incredibly easy to use! Nice, smooth lines on the first try! The tip is super thin but also quite sturdy, so it's easy to increase the line's width by simply adding pressure. The color is deep and even, very nice. The pen is small and light, so it's easy to hold and use. The cap snaps on firmly, so it's easy to just throw into a bag and take it with you.