I have dry hair and I find that going into fall and winter it will be drier. I have started to use coconut oil for extra moisture. It doesn't weigh down my hair like leave-in conditioners do. Also, you might want to buy some sulfate and silicone free shampoo/conditioners and see how your hair responds to them. Those products are so bad for drying out hair.

Here's a website that discusses the bad things about sulfates and silicones.
Controlling Curls, Curly Hair Do's and Don'ts