Babyliss Curling Irons are professional high quality with either ceramic to ensure heat and smoothness or tourmaline to give even heat and protective qualities. The professional iron gets very hot and must be controlled accordingly to the conditions of the hair.The spring handle is more of a retail concept whereas the marcel is what the stylist is trained with. The marcel handle creates less agitation on the wrist as it rotates as you work. The hot air brush provides curl with the dry heat whereas the hot curl brush is an curling iron with teeth. All irons need to be wiped down in between customers and unplugged at night. The barrel sizes range from 13mm-38mm. Clean with WASH and paper towel to remove residue and then RTU or Concentrate for disinfection.