Our built-in comb is designed to smoothly separate your lashes, creating a perfect curl, unlike conventional eyelash curlers which may cause the lashes to overlap and twist in different directions. All metal parts are made of carbon steel (a metal that is stronger and more durable than stainless steel).Sping-Loaded Hinge helps regulate the correct amount of pressure applied to your lashes. The built-in comb is designed to only touch your lashes, (never your eyes) adding extra support to your lashes as they curl, creating a proper shape as opposed to a harshly crimped shape. Ergonomically designed (Peach handle) make it easier on your hands and fingers. The Eyelash Curler-Charming secret of Eyes of ALL shapes & sizes, Either Asian or American Deep set eyes. More Curl!