As usual I will share with you what I discover.

As my baby had in the past days a lot of crusts on the head, we went to the doctor to ask for help.

He said that it is the very common cradle cap, very typical in newborns.

He advices to put some oil on the head to make it soft, and then remove it with a comb.

OK... we used olive's oil... actualy a good one, as we had only that at home and after the comb, we also gave the baby a bath... in order to wash properly ;-)

Hope this helps!