Redness, greasy scales, and heavy flaking on the scalp are signs of cradle cap -- a condition caused by the buildup of oil and the shedding of skin cells. It looks unattractive, but isn't harmful to your baby. Signs: Scaly patches of skin cells and/or redness appear on the scalp. Treatment: You can treat cradle cap yourself by washing your baby's head with a mild baby shampoo more frequently than normal. Soft brushing can also help remove the scales. If this doesn't work, consult your pediatrician. She may prescribe a stronger shampoo or an ointment.