I bought this eyeliner on a recommendation after I lost my Stila Smudge Pot. I like Kryolan products in general but I was disappointed to find that this product smudges throughout the day. I put on on a bride during a trial and she had raccoon eyes before I was done with her hair. This was with INGLOT Duraline mixed with the liner, and the bride was not wearing mascara. I tested it on myself for a day and found that it smudged to my lower eyes within a few hours (without Duraline). I have personally owned many pot eyeliners across different brands (Bobbi Brown, Stila, Maybelline, Revlon, Essence, Laura Mercier) and have used many eyeliners that did not smudge whatsoever all day. This was not one of them. It's not a horrible eyeliner - it's creamy and fairly black (though not the blackest), but as a pro I can not have any smudging whatsoever, and this liner simply does not hold up.