Hair straightening is a styling technique that involves straightening hair to make it look sleek and sleek. All permanent straighteners use the same strategy. Using curls and heat straightening procedures, a neutralizer is then applied to the hair. This neutral keeps your hair in its new shape, with new bonds forming between the protein molecules in your hair. A hair straightener works by breaking down positive hydrogen bonds in the hair cortex. The smoothing plates mainly use ceramic material for their plates.