The first time that I rollerset my hair, I sat under the dryer. But the back didn't dry (I was sitting too low under my dryer at home). So I left the rollers in the back so that it could dry. In the morning, it was nice and smooth; just like the rest of my hair. The great part was that you couldn't tell which part was dried under the hair dryer and which was air dried: they both looked and felt just the same. Which was great for me on busy days. Now, I can cook and clean with my rollers in, instead of frying under the dryer all the time...lol