Here are some previous posts addressing "dry hair":
1. Reader's Question: More on Moisture ... Dry Ends
2. No Poo Review: Baking Soda with Conditioner
3. Chapt. 6: Moisture, Moisture, Moisture
4. Oh Honey, Honey ... Deep Conditioner Recipes
5. Winterize Your Conditioner!
For more, check out the labels "Dry Hair" and "Moisture".