I really like this eyeliner. I never have any smudging by the end of the day. A few of the colors do cause me to have sensitivity the next day if i wear them on my lower lid. So i have to only wear them on my upper lid and be careful to not get any in my eyes when I remove it. It's a pain but so worth it for the color range and ease of applying.
I have been using this for a week. I use primer after using my regular moisturizer and a little powder after application of this product and I have not felt the need to blot or re-powder my face at all. I have it on for about 8-9 hours. I live in NC and although I work in an air conditioned environment I am one who sweats just from walking from my car into work because of the humidity. I am happy with the coverage (sheer). This will definitely be a repurchase.