I do not know why your daughter's hair is so dry. It could be lots of different things..medicine she may be taking, washing her hair too often or using harsh products on her hair, it could even be the climate you live in. One thing I do.. I went to our local health food store (try an organic market), and bought some plain old coconut oil. I have to wash my hair every day but at night I put some coconut oil in my hair and just put my hair in a bun or during the day after my hair is dry in the morning I just add a small amount to my hair. Good luck