I used coconut oil mixed with a tiny bit of head and shoulders. Scrubbed it with a super soft baby hair brush. Took a few washes, but it worked. My son had it really bad.
when giving baby a bath rub the baby shampoo or body wash on their head and use a really fine toothed comb and go from the forehead to the back of the head! you can use baby oil too but the shampoo works just as good