My d recently got balyage I think its called, basically blonde highlights and then the ends dyed blonde all across. Original colour is dark brown. Anyway hair was stunning first day, she loved it, but ever since, every time she washes it, after using shampoo and cond, then towel dry, it is a mass of knots and takes forever to untangle. I know first world problem, but any product advice? Is blonde dyed hair especially dry?