I've inly used these twice, on my bottom lashes. they did work, but not as I wanted them to, but I think that was because I used a different mascara as well. I have yet to try these on my too lashes. i will soon though! I imagine they'll work well. I'm actually excited to try them. also! you can use 1 single card multiple times, even though it said not to. oops! but I can't justify using it once when it certainly can be used over again!