Hair straightening is not recommended while breastfeeding. Hair straightening involves softening the hair with a potion first, and this is when you are exposed to chemicals. These chemicals may pass through the breast milk and affect the baby. If you simply use a clipboard to straighten your hair, it will generally not affect breastfeeding. However, such an operation can easily damage the hair and is not recommended. To keep your mood happy during breastfeeding, you should not straighten, color or perm your hair first, and should wait until you are weaned before doing your hair. In order to ensure that the baby has enough milk, you can drink more food such as soup, pig trotter soup, crucian carp soup, chicken soup and so on, to increase breast milk. If there is any discomfort, you should consult a doctor in time.