Dd is 5 and has a very thick patch of what looks like cradle cap on her head. I have been using olive oil on it, but it really hasn't done anything to touch it. The outer layers come off, but it's so thick that I can't shift it all. I've been picking bits of it off, but as fast as I shift some, it comes back.
Any suggestions for a really effective treatment? Would prefer not to use something too chemically.