I really wanted this to be great, but it was horrible for me and I'll be tossing mine in the trash. I have skin allergy issues, so I'm constantly paranoid that my next new makeup item will cause a reaction. I thought I was in the clear with this liner after my test run, but apparently I didn't leave it on long enough. The next time I wore it, I noticed a little discomfort but assumed it was just because the mascara I was wearing was starting to dry out. Then I wore it yesterday with different mascara (one I've used regularly for a while) and I feel like parts of my eyelids have been burned horribly and I have some swelling, etc. After wearing it for about 4-5 hours, it felt like some of my eyelashes were being slowly ripped out and it took about an hour to remove my makeup because the pain was so bad (normally it takes me about 5 minutes).
My reaction to it wouldn't usually be enough to knock a rating down, and that's true here. This stuff just didn't work well, even without the reaction. It smeared, didn't apply very smoothly, and I got some weird balls that formed as I applied it. I got the black one and it went on looking more gray, even after going over the line again later to neaten it after it started smudging. I always use primer and a setting spray, but neither helped this liner stay in place. Oh and I don't recommend using the smudger thing that comes on the end. It's very stiff and has a gritty texture, so I didn't try it on my eyes.
Two lippies because I think it could work for some people, maybe, and it's much easier to use than gel with a brush, or any kind of liquid liner. Plus the price isn't bad.