My eyelashes have begun to curl towards my nose from the way I sleep and I wanted something to help me condition them to curl up instead. I found this heated eyelash curler on Amazon to try out. It does heat up really well and is pretty simple to use. I think I will have to use it on a regular basis to get my eyelashes trained again, but I can definitely see a difference with even 2 uses. It takes one AAA battery and is very lightweight for taking with you places.