I recommend Kai Eyelash Curler.

I highly recommend the Kai Eyelash Curler! I bought it at Olive Young and have been using only this one for years! I think I've used over 5 of them in the past few years. It's so convenient to carry around that it fits perfectly in my pouch when I travel. Just because it's small doesn't mean it compromises on performance, and it curls my eyelashes really well.