Firstly I received this eyeliner pen in the Andy Warhol Edie set, as much as I would feel naked without wearing eyeliner everyday £19.00 is a bit steep for me! I never realised it was possible to have such a turbulent relationship with an eyeliner pen until I met this one. I absolutely love these things and they are a staple part of my make up, my usual pen is Soap and Glory Super Cat which is AMAZING but when I got this set for Christmas this was definitely what I was most excited about trying. The NARS eyeliner stylo has a very, very fine tip which makes it easy to get a nice thin line (and a perfect pointy flick if that's your style) but I prefer my line a bit thicker towards the outer corner of the eye and this is where I hit a problem. When I drew over the existing line to thicken it up the original black kind of peeled off and you were left with a very patchy line which was quite hard to fill in and make look evenly black. Although when you do get the perfect coverage it is VERY black which I love and the description of this product says its lasting time is up to 24 hours...hell yeah it is!!!!! You try getting this off at the end of the day!! It takes a lot of scrubbing and is still the intense black it was when you first applied it. I've been using this for nearly a week now and I think I might have turned a corner and softened the tip a bit because I'm finding it applies much better as I don't need to go over it so much and ruin my lovely black line. I wouldn't repurchase this as £19.00 is too pricey for me but it's nice to have as a little treat to try out!