So I have incredibly sensitive skin and went through an awful year-long process of trying to find eye liner that didn’t make me break out in painful eczema all over my eyelids. Yes it’s as miserable as it sounds. This was one of 2 that I found that works and the other one not only needed to be reapplied 4 times a day but gave me racoon-eye runs in between applications. This liner however is really easy to apply (basically zero pressure is needed for a solid line and pigmented, dark color), it barely smudges at all over 16 hours of wear without primer, and it gives my skin zero reaction. And because of the tiny diameter of the stick, you really don’t need to worry about sharpening. Biggest draw back is if you drop it on the tip, the liner is really soft and smooshes. However since that is exactly why you can apply it so easily it’s well worth the extra care. The smudging tool is also great. And just to have done it, I tried the sharpener. Like I said it’s pretty unnecessary but none the less is really easy to use. Can’t recommend this stuff enough.