The Braun Satin Hair 7 hair dryer with Iontec has been specially designed to maintain the natural shine and health of your hair while drying. Braun's research has shown that excessive heat during drying leads to a significant loss of moisture in the hair. This results in brittleness and a dull, unhealthy appearance. The Braun Satin Hair 7 hair dryer guarantees healthy drying, as it features continuous and precise temperature control.