You might expect your baby's skin to be flawless, but baby rashes and other skin conditions — such as cradle cap — are common.
Cradle cap appears as thick, yellow, crusty or greasy patches on a baby's scalp. Cradle cap is most common in newborns and usually clears up on its own by age 6 months. In the meantime, wash your baby's hair with mild baby shampoo and loosen the scales with a small, soft-bristled brush. For stubborn scales, rub petrolatum or a few drops of mineral oil onto your baby's scalp, wait a few minutes, and then brush and shampoo your baby's hair. If cradle cap persists, ask your baby's doctor about other treatment options.