It takes a long time! To dry my hair alternating diffusing and airdrying takes at least 3-4 hours. If I were to diffuse only which I haven't done in a long time it would take probably 1-2 hours, but I have pretty long hair. Squeezing the water out in the microfibre towel speeds it up a bit.
My natural growth is SO much nicer than the relaxed growth - it feels so silky!
Get used to me. Black, confident, cocky; my name, not yours; my religion, not yours; my goals, my own; get used to me. -Muhammad Ali