For a baby with very dry scalp, it is recommended to avoid using shampoo on their hair when their skin is sensitive. Instead, try using just water and a little almond oil during bath time on their body and scalp. Avoid using a towel on the scalp and use your hand instead. Also, try not to wash their hair every day and use lukewarm water to avoid stripping the skin of its natural moisture. If there are no improvements after two weeks, it may be best to consult a professional.