I absolutely love this eyeliner. It is the wonderful coppery-bronze color I have been searching for, and it doesn't have too much red undertones in it! I think this would be best suited for fair skin toneswhile it is not too dark and not too light for me, it might pull a tad too light on darker skin. For example, this doesn't show up that well when I wear dark eyeshadow, so I tend to only wear this with light to medium eyeshadow shades. I also think this would be best suited for hazel, blue, and green eyes, as copper and bronze shades tend to enhance those color eyes. When I wear this eyeliner, it really makes my eyes pop!This eyeliner is incredibly long-lasting. It lasts all day for me, no smudging, fading, nothing. To give you an idea of how long-lasting this eyeliner iswhen I got home after buying this, I swatched it on my hand. After many times washing my hands throughout the day, the eyeliner stay put and did not fade. I'm not joking! Finally, after trying to rub it off THE NEXT DAY with my fingers, it faded, but it was honestly still there. I ended up having to remove it with makeup remover that night! (Keep in mind that was a day and a half after I had initially swatched it.) I can't vouch for its lasting power on the waterline, as I usually only line my waterline with nude eyeliner. However, on the upper eyelid, it stays all dayI do not notice any difference whatsoever from when I apply it in the morning to when I take it off at night before bed.The application is great and very easy. It takes me very little time to apply this and really does just slide right on. It's very creamy. I have not tried smudging it yet, so I cannot tell you how it does with a smudged or smoky eye look, but I can image this would do very well for that sort of look. Also, as long as you sharpen the pencil once every few days, you can get either a thin or thick line.On a side note, I really like how this eyeliner pairs with most lipsticks, especially Revlon's Berry Rich. When I wear both, it is one of my favorite makeup combinations.