I think as long as you are using low to medium heat you should be ok. Minimal damage that way. I like using the dryer because I am too impatient to diffuse for more than 5-10 minutes and air drying can take all day for my super dense hair.
2C/3a, Medium Texture, Normal porosity, High Density, Normal Elasticity (so says the LCLF Hair analysis)
Co Wash: As I am
RO: Yes To Carrots / Ion
LI: Biotera / Samy Big Curls Defining Cream
Gel: FSG, Volumax (Original and Mega)
Color: Henna
Tools: Diffusing