The general tea oil coated baby hair will not have any harm. Tea oil is a better natural shampoo, which contains vitamins and some other trace elements. Tea oil can prevent hair yellowing, hair loss, and can also treat dermatitis, burns and other problems. Long-term consumption of tea oil shampoo, not only can anti-dandruff, anti-itch, hair care, but also can change the hair and scalp environment, so that the hair quality better.
There is generally no harm in babies smearing tea oil all over their bodies. Tea oil is a purely natural vegetable oil that does not contain chemical additives, and smearing it on the baby's skin generally does not have an effect. And can be applied to the baby's neck, armpits and other places after bathing, to prevent babies from eczema or rashes and other skin diseases.
Overall, there is no harm in tea oil whether it is applied to the hair or to the skin. But if the baby is allergic to the ingredients in the tea oil, you need to stop using it. And tea oil is not a cure-all, it can only have a supplementary effect on hair and skin. If the baby has a skin disease, or need to go to the hospital for treatment.