I have given up on finding my HG conditioner (and God knows I've tried) so I washed my hair with water only today and my hair is so soft, but scalp feels so dirty which I know is expected since it takes a few weeks to get rid of the waxy feeling in the scalp.

My questions are: How many times per week should you wash your hair?
What do you do with dandruff/flakey scalp? I have dry hair so I'm not so worried about oily hair, I'm more worried about the waxy scalp and flakes. I heard ACV rinse helps? Any other advice is appreciated.
My last question is...What oils should you use, if any?

Thank you