Well. I myself use this kajal everyday. According to me this is the best in its range. it does not smudge even till evening. the application is rough at first but it becomes as the kajal starts getting frequently used. this kajal is also not sensitive to eyes. it is also waterproof. so now no worries about your eye makeup even if you sweat or cry! ?? it is very easy to use can be carried anywhere and also ideal for all purposes. for example it can be worn daily to school, college or work. It can be also worn to party and even smudged to get a dramatic look. so overall I find this product very useful.