Yep Moo Goo is great.
If you go to a Organic health food shop like a Replenish, they have a great range of products for baby skin and hair. The guy I saw at my local Replenish mentioned that cradle cap was usually a result of not enough of Omega 3 (oil fish). They also sell all the Moo Goo products.
They would also take a look for you and recommend what to do.