I am very happy that I bought this eyeliner! The colour is super black and strong! It is very long lasting; it stays pretty much all day without smudging. It is completely waterproof and does tolerate a little bit of oil (My eyelids get a little bit oily and I don't have any problems with smudging). The pen type packaging allows for very easy control, so this eyeliner is suitable for anyone even people that don't have the best make up skills. Really amazing eyeliner!!!