I am a big fan of Essence and a regular customer and their eye liners are no different. There is a great variety in colours for day and night looks. The product is smooth to apply and has a strong pigment. Although I have noticed it has faded slightly after a few hours into more of a smokey look rather than a distinct line, this isn't a big issue for me. The price is very affordable. I did once buy the pen and it unfortunately stopped rolling up about halfway through its use, but this has only happened once in the multiples that I've bought. Definitely a product I'll continue buying.