Cradle cap is one of the most startling-looking conditions that is almost always completely harmless. The yellow or brown crusty scales on a newborn's scalp look alarming, but cradle cap is not painful, not contagious, and almost always resolves on its own. Here's everything parents need to know.
What Is Cradle Cap?
Cradle cap (infantile seborrheic dermatitis) is a scaly, greasy, yellowish or brownish crust that forms on a baby's scalp. It can also appear on the eyebrows, ears, eyelids, nose creases, and neck — wherever sebaceous (oil-producing) glands are dense. It typically appears in the first weeks to months of life and affects approximately 10% of babies, with higher rates in the early months.
Despite looking unpleasant, cradle cap is:
- Not itchy or painful for baby
- Not caused by poor hygiene or anything the parent did wrong
- Not contagious
- Not an infection
- Not a sign of anything medically significant in most cases
What Causes Cradle Cap?
The exact cause isn't fully understood. The current leading theory: cradle cap is caused by overactive sebaceous glands, likely stimulated by maternal hormones still circulating in the baby's system after birth. The overactive glands produce excess sebum (oil) that causes dead skin cells to clump and stick to the scalp rather than shedding normally.
A secondary factor may be colonisation by Malassezia yeasts, which are present on healthy skin but thrive in sebum-rich environments. This is why some antifungal treatments can help persistent cases.
What Cradle Cap Looks Like
- Thick, greasy yellowish or brownish scales on the scalp
- Scales may be patchy or cover the entire scalp
- Underlying skin may appear slightly red or pink
- May extend to eyebrows (where it can look like flaky dandruff on the brow), eyelids, ears, or neck folds
- Baby appears unbothered — no scratching, no distress
How to Treat Cradle Cap
Mild Cases: Oil and Gentle Brushing
The most effective and gentle approach for mild to moderate cradle cap:
- Apply a small amount of baby oil, coconut oil, or mineral oil to the affected area and leave for 15–30 minutes (or longer, even overnight). This softens the scales.
- Using a soft baby brush or soft toothbrush, gently loosen the softened scales with small circular motions. Do not scrape or force stubborn scales.
- Wash the hair with a gentle baby shampoo to remove the oil and loosened scales. Rinse thoroughly.
- Repeat 2–3 times per week until the cradle cap clears.
Patience is key — full clearance can take several weeks. Don't try to remove all the scales in one session; work gradually.
Persistent Cases: Medicated Shampoo
If oil and brushing don't produce adequate improvement after 2–3 weeks, a low-concentration ketoconazole shampoo (antifungal) used once or twice weekly typically clears even persistent cradle cap. This is available over the counter in some countries and by prescription in others. Ask your pharmacist or pediatrician.
Very Thick or Widespread Cases
In some babies, cradle cap is very thick and widespread, or extends significantly beyond the scalp. A pediatrician can prescribe appropriate treatment — which may include a mild topical corticosteroid in addition to antifungal shampoo for particularly inflamed cases.
What Not to Do
- Don't pick or scratch the scales: This can break the skin and introduce infection
- Don't use adult dandruff shampoos: Too harsh for infant scalp
- Don't over-wash the hair: Excessive shampooing removes the oils that help the scales soften naturally
- Don't apply strong essential oils: Concentrated oils can irritate infant skin
When Does Cradle Cap Clear Up?
Most cases resolve on their own within the first year of life as maternal hormone levels fully decline and sebaceous gland activity normalizes. Some babies have cradle cap that persists longer, particularly if they have a tendency toward seborrheic dermatitis in general.
Cradle Cap vs. Eczema: How to Tell the Difference
These two conditions can look similar, particularly when cradle cap extends beyond the scalp:
| Feature | Cradle Cap | Eczema |
|---|---|---|
| Appearance | Greasy, yellowish, crusty scales | Dry, red, rough patches |
| Itchy? | No — baby unbothered | Yes — baby scratches |
| Primary location | Scalp, eyebrows, ears | Face (cheeks), creases, trunk |
| Age of onset | First weeks of life | Usually 2–6 months |
| Treatment | Oil, brushing, antifungal shampoo | Emollients, topical steroids |
If you're unsure which condition your baby has, or if the rash is spreading significantly or appears to be causing distress, see your pediatrician. For broader skincare context, see our baby skincare guide and our newborn bathing guide.