Hi kisz4tj. I have a daughter who is 6 yrs old and I am very much into the care of her hair. However, I don't wash her hair 2x per week. As she gets older and can take showers, I'll try to implement it into her regime. I think with children, it's a good idea to keep it simple. I don't ever want my child to view doing her hair as a chore. I wash her hair 1x per wk with CON, condition with Pantene Smooth and Sleek and apply any one of various moisturisers she has. Put in ponytails and she's done. I redo her ponytails throughout the week until next wash. That's it.
PS . I used to give her pre-shampoo olive oil treatments as well. I wait until the summer though, so she can run around outside and generate heat on the scalp.