Cradle cap causes crusty or oily scaly patches on a baby's scalp. The condition isn't painful or itchy. But it can cause thick white or yellow scales that aren't easy to remove. Cradle cap usually clears up on its own in weeks or a few months. Home care measures include washing your baby's scalp daily with a mild shampoo. This can help you loosen and remove the scales. Don't scratch cradle cap. If cradle cap doesn't stop or seems serious, your baby's doctor or other health care professional may suggest a medicated shampoo, lotion or other treatment.