Gama straighteners with Ion Plus technology are equipped with an ionizer external to the straightener and produce significantly higher ionization (up to +80%) compared to straighteners that have a built-in ionizer, with evident beneficial effects on the hair. When the plate is working you may hear a slight noise due to the position of the ionizer between the dies and the high quantity of ions released. This noise is normal and certifies the correct functioning of the straightener and the technology.