In my case I can see a clear difference between airdried sets and the ones that fully set under the dryer. Even btwn those and the ones I semi-dry (30-45 minutes) and then airdry because it's too late and I go to sleep. My roots are less puffy when I dry under the dryer, and the length is smoother. When I airdry the texture is kinda crinkly, specially now that I'm textlaxed.