Medically reviewed by Dr. Vidya Swaroop, MBBS, DDVL, Consultant Dermatologist
You noticed it while towelling your baby's head — thick, yellowish, waxy flakes stuck to the scalp, and underneath, skin that looks slightly red. It wasn't there last week.
This is cradle cap, and here is the short version: it is harmless, it doesn't hurt your baby, and it goes away on its own. The longer version is worth reading anyway, because most of the popular home remedies for it make it worse.
What is cradle cap?
Cradle cap is infantile seborrhoeic dermatitis. It shows up as greasy yellow or white scales, usually on the scalp, sometimes also on the eyebrows, behind the ears, on the sides of the nose, or in the neck and armpit folds.
It typically appears in the first weeks to first three months of life, and most cases clear up on their own by six to twelve months.
The cause isn't fully settled, but the leading explanation is that hormones passed from mother to baby before birth leave the oil glands temporarily overactive, and a yeast called Malassezia — which lives on everyone's skin — grows more readily in that oil. When the hormones fade, so does the cradle cap.
Three things it is not: contagious, painful, or caused by anything you did or didn't wash.
Is my baby itchy or uncomfortable?
Usually not. This is the reassuring part and it's also the most useful diagnostic clue you have. A baby with cradle cap feeds normally, sleeps normally, and doesn't scratch at their head.
If your baby is visibly itchy and distressed, it is more likely to be eczema. Eczema tends to be drier and rougher rather than greasy, is often on the cheeks and the outsides of the arms and legs, and it itches.
How do I get rid of cradle cap?
You don't have to do anything at all — it resolves on its own. But if you want to shift the scales faster, the safe method is soften, wash, comb.
Soften. Massage a small amount of plain oil into the scalp and leave it for an hour or so. Coconut oil, mineral oil or plain petroleum jelly all work. The oil loosens the scale's grip.
Wash. Then shampoo it out with a mild baby shampoo. This step matters — leaving oil sitting on the scalp overnight, which is the traditional practice in a lot of households here, can make the build-up worse rather than better. The oil goes on to loosen scales and comes off in the same session.
Comb. While the hair is damp, work through gently with a soft brush or a fine baby comb, in the direction the hair grows. Take off what lifts easily. Stop when it stops lifting easily.
Washing the hair a bit more frequently than usual — every day or two during a flare — helps stop it rebuilding.
What should I avoid?
Don't pick the scales off. This is the one that matters most. They look as though they should peel off in a satisfying sheet, and they will come off if you insist, but they take skin with them. Broken scalp skin is how a harmless condition turns into an infected one.
Don't use adult anti-dandruff shampoo. The active ingredients are too strong for infant skin and there's a real risk of it getting into the eyes.
Don't leave oil on for days. Once it has done its softening job, wash it out.
Don't use a steroid or antifungal cream without being told to. Both are sometimes prescribed for stubborn cases, but that's a decision for someone who has looked at your baby's scalp.
When should I see a doctor about cradle cap?
See a doctor if the scalp is weeping, bleeding, or has yellow crusting that suggests infection, if the rash spreads widely across the body rather than staying in the usual oily areas, if it is clearly itchy and your baby is unsettled, if it hasn't improved at all by around twelve months, or if there is hair loss beyond a little coming away with the scales.
Very rarely, extensive and unusually severe seborrhoeic dermatitis in an infant is investigated further. This is uncommon and not the situation for the overwhelming majority of babies with flaky scalps — but persistent, widespread, worsening rash is always worth a professional look rather than another round of home remedies.
Quick answers
Does cradle cap mean my baby will have dandruff later? No reliable link. Infantile seborrhoeic dermatitis and adult dandruff are related conditions but having one as a baby doesn't predict the other.
Will it affect hair growth? No. Some hair comes away with the scales when you comb, which is unnerving but temporary. It grows back.
Can I use breast milk on it? It's a popular suggestion and it's harmless, but there's no good evidence it clears cradle cap. Oil, wash and a soft comb is the method with a track record.
Is it caused by not washing my baby's hair enough? No. It's an oil-gland and yeast issue, not a hygiene one. Washing more often helps manage it, which is not the same as poor washing having caused it.
My baby has flakes and a red rash in the nappy area too. Related? Possibly — seborrhoeic dermatitis can affect the nappy area and other skin folds, not just the scalp. Worth mentioning both to your doctor together rather than treating them as separate problems.