My 4 month old daughter has dry, tangled hair. What can I put on it to keep it moisturized? Baby oil?

Baby hair. Baby hair is frequently very fine and thin. Use a soft brush. You can use a baby shampoo just once or twice a week which will keep it soft and clean. Baby oil is not usually necessary, but you can use it or a baby hair conditioner. Most early baby hair may fall out or change in the first year, and the new hair comes in differently.