Does softening hair affect breastfed babies?

Patient's question:

My baby is eight and a half months old; Can I soften my hair now; Still breastfeeding; Also providing complementary foods. Previous treatment history and effectiveness: No matter what kind of assistance is not cared about: How can I soften my hair

Doctor's answer:

According to your description, it is best not to perm or dye your hair while breastfeeding, as perm and dyeing agents may contain chemical reagents and heavy metals, which can affect the baby.
Advice: It is recommended that since hair dye is applied to the mother's hair, a small portion may also be absorbed by the scalp and enter the bloodstream, eventually reaching the breast milk. Even if the concentration of hair dye in breast milk is low, due to the baby's underdeveloped liver and kidney function and poor detoxification ability, it is easy for hair dye chemicals to accumulate, which is harmful to the baby. Therefore, breastfeeding mothers should be aware that many ingredients in medications and cosmetics can interfere with the baby through breast milk.