FYI I have long but straight lashes so it looks like eyeliner.
I tried it in the evening, without makeup. I found it to be slow and it was hard to curl all the lashes BUT I was satisfied with the result. The next morning they were still curled! And despite its sticky mechanism, I still have to give it 4/5 because it delivered what it promised, in the end, curled lashes that also last longer than I expected.
It will be exciting to test when I finally have makeup on, but I don't think it can get better.