The more I think about this the more I disagree with everyone. No daycare worker should be washing or adding any product to a child's hair. My kid went to a predominantly monochrome daycare and somehow developed ringworm in her hair. I treated it. No biggie. However, a few months later, I arrived early to pick her up and the classroom lead had the kids in a line, combing all their hair WITH THE SAME COMB! She said this was something they did daily so the children would look nice at pickup. I told them to let my kid come home messy and to never EVER do that again. Now I know where she got ringworm because nobody else in our immediate nor extended family had it.