Vapor Infusion Technology - Rehydrate, protect, and straighten-all in one pass! Just fill the reservoir with distilled water and activate the vapor button to style quickly and give your hair the treatment it deserves. User must press and HOLD the vapor button for two seconds for it to activate. Vapor only works when the straightener is near closing. Vapor will not dispense when the unit is open, only when fully or partially closed. 1" Ultra Ceramic Plates - The floating 1" plates are covered in ceramic for a smooth glide with less frizz and fast heat recovery, making one-pass straightening easy and reliable. Macadamia Conditioning Treatment - The specially formulated treatment absorbs deep into the hair cuticle to rehydrate your hair, leaving it soft and shiny. Just fill the reservoir prior to heating, then hit the vapor button to condition while you straighten! Salon High Heat - Professional 450° heat combines with vapor technology to style quickly and give a strong hold that lasts. Plus, it heats up in just 30 seconds! Digital Controls with Temperature Lock - Use easy digital controls to lock in the flat iron at one of five temperature settings ranging from 300°-450° to find the best heat for your hair type.