The brush allows hot air from the blow dryer to escape the barrel to protect your hair from damage while drying with heat. Fast drying, helps minimize blow drying time. It works wonders for smoothing, straightening & blow-drying your hair or creating soft bouncy curls. It emits negative ions when heat is released, seals the cuticles thus protecting the hair and making it slip easily. The ceramic cylinder is specially designed with orifices which spread uniform heat resulting a rapid drying. Helps straighten and adds volume, creates waves and loops according to your preferences. Perfect for all types of hair even if is long, medium, short and for hairstyles.