What is it? Seborrhoeic dermatitis, or cradle cap, looks like greasy, scaly yellow patches on a baby’s scalp that can become dry and flaky over time.
What causes it? Babies are born with active sebaceous glands that develop from the second trimester of pregnancy and, in the third trimester, make vernix to cover and protect them in the womb. In newborns, sebum builds up and solidifies to create crusty skin on baby’s scalp. It is not caused by poor hygiene.
Treatment: It’s easily treated at home, Megan explains. “Olive oil rubbed into the scalp and left overnight can help lift off the scales,” she says. After three months the sebaceous glands on your baby’s head will become inactive and stay that way until puberty, so you shouldn’t have any more problems with cradle cap.