Separate the lashes smooth and create a perfect amount. All metal parts are made of carbon steel (a metal which is stronger and more durable than stainless steel). Spring Device Set, helps to control the right amount of pressure applied to your lashes. Ergonomically designed (Peach handle) makes it simple for hands and fingers. The built-in comb is designed to to have your own lashes to touch the atomizing slice by using additional support to add to your lashes, while you curled and create a correct shape.