I have been natural for over 5 years and I have asked this question in other places with little help.
My hair is always dry no matter what do and at this point I have no idea what to do. You name it I have tried it as far as products go and I have tried every natural hair technique out there. I do hot oil treatment and deep condition and neither does anything,My hair is just naturally dry and nothing works at all. It is so bad I am getting to the point where I think there maybe some kind of under lying medical issue. I know about porosity, protein moisture balance, water based moisturizers than sealing, baggying, cream moisturizers, Sulfates, cones, alcohols, everything and nothing works.
It got so bad I had to cut all my hair of again because even though I would deep condition weekly, detangle in sections only when conditioner was in my hair, moisturize and seal in the morning and at night, and never used heat my hair was upper damaged for the dryness.