J.S.
C.,
My son had cradle cap for a long time, and I had to comb his head in every bath to get it out. I also switched to Paul Mitchell shampoo for kids (they carry it at Kids Hair). These two things combined really helped. He was pretty cooperative about getting his head combed to loosen and remove the cradle cap. I would also comb his head/hair vigorously after a bath as well.
Good luck,
J.