This product works well drying my hair. It takes about 40-60 minutes to dry my hair. At first, I could not attach the end to my hair dryer because I actually thought the hole was too small. The hole that I am talking about is the hole that is attached to the head cap arm. I got it to fit and turn on my blow dryer and the arm to the head dryer blows up and you can feel the air circulate through it to your head/hair. This head dryer is so neat and cool.