How to care for hair: If you don't want your hair to dry out, 1 thing I suggest using is Moroccan Oil Shampoo & Conditioner if you choose to wash your hair.    

To help keep the waves, I suggest you use Silk Therapy Shampoo & Conditioner. This should stop it from being dry as well.

Let conditioner stay in for at least 15 mins. Make sure you let your hair AIR DRY! 

To detangle, start from the bottom of the hair with a comb or a brush and work your way up.