What's really made a difference in my hair is to do an overnight oil treatment. It's really simple. I use either Extra Virgin Olive Oil or Coconut Oil or a mixture of the two.
Just put it on your hair before going to bed. Tie it up, and make sure you put a towel on your pillow.
You could also put your hair in a shower cap.
Honey is also really good for dry hair. You could do a quick treatment before washing.
This is my prayer. That I'll die living just as free as my hair.