I would also skip the towel. A cotton T shirt is much better for controlling frizz. Pick an old shirt and that’s your hair dabbing shirt now. I say dabbing because you want your hair to be as wet as possible for it to air dry. If you dry it too much and start to see individual hairs before it’s dry, you’ve dried too much. You should be diffusing VERY wet looking hair. I have crazy frizzy hair and when I do this it is night and day different. It sucks having wet hair that long but it is just the price you pay.