The most efficient method for giving colored hair a radiant shine is to use the Braun Satin Hair 7 EC2 Curler with Color Saver and IONTEC technology. The most efficient method for giving colored hair a radiant shine is to use the Braun Satin Hair 7 EC2 Curler with Color Saver and IONTEC technology. The purpose of the Braun Satin-Hair 7 Color Saver curler is to prevent your colored hair from becoming overly hot during styling, thus protecting your delicate hair.