For women who are pregnant and have childbearing requirements, hair coloring is prohibited during pregnancy because hair dyes have a certain effect on the growth and development of the fetus, and may even lead to fetal deformities. Whether in early pregnancy or in the middle and late stages of pregnancy, it is forbidden to dye hair, this is because hair dye will mainly use hair dye, and hair dye is synthesized by a variety of chemical elements, which contains a certain degree of toxicity, and after dyeing hair will be absorbed by the skin through the scalp, so that may affect the growth and development of the fetus, and may even lead to fetal deformities in the early stage of pregnancy, and cause abnormal development of fetus in the middle and late stages of pregnancy. Therefore, it is prohibited to dye hair during the entire period of pregnancy, although the hair dye is not 100% impact on pregnancy, but still afraid of the impact, if once the growth and development of the fetus is affected, and lead to fetal deformity, then can only be induced termination of pregnancy. If you do want to color your hair, you can only do it at the end of your pregnancy, or you can consider coloring your hair at the end of breastfeeding, after all, hair dyes have a certain adverse effect on the human body, so it is really not suitable to do it during pregnancy. Hair coloring is not recommended for women during pregnancy.