This is my third blow out since I have been natural. I did this one myself. I used the tension method with the concentration attachment. I forgot to measure my mane so I have no numbers to report right now. Maybe I will blow it out again in another three months. It took a good hour to blow this out and I did not like the blow dryer. Actually, I didn't like the buttons. The buttons are not compatible with slippery fingers. So what do you think?