It is best not to pull or perm your hair while breastfeeding, because when pulling your hair, the barber needs to apply a chemical to your hair to soften it, and then straighten it by heating it. In this process, these chemicals can be absorbed through the skin of the head, and when the child is breastfeeding, these substances can enter the child’s body through the milk, most of these chemicals are toxic, and if they enter the child’s body, it may affect the child’s growth and development. Therefore, try not to pull the hair during breastfeeding, because the child’s skin is relatively tender, easy to chemical allergies, pulling the hair among these chemicals, may also cause skin allergies in children.