Try not to hold your baby for a few days before you finish dyeing your hair, as the chemicals in hair dyes can irritate your baby’s skin or airways and adversely affect your baby’s health. Hair dye is a cosmetic product for coloring hair and commonly contains coloring agents such as p-phenylenediamine, which is an internationally recognized carcinogen. Hair dye contact with the skin, hair coloring process heating, will make benzene organic substances through the scalp into the capillaries, with the blood circulation to reach the bone marrow, long-term can cause hematopoietic stem cells malignant changes, leading to the occurrence of leukemia. As the residual potion will be left on the hair within a few days after hair dyeing, it will come into contact with the baby, and it is also easy to be eaten by the baby into the mouth, which is hazardous to the baby’s health. The irritating odor and chemical composition of hair dye can affect the mucous membrane and skin of the baby’s airways, causing allergies and damage to the lungs. You can hold your baby about a week after dyeing your hair, after washing it a few times, and when your hair has no obvious irritating odor, which is less harmful to your baby at this time. Apply special post-dye hair care products after dyeing to soften and stabilize the hair structure. When shampooing, use your fingertips to gently massage, do not rub hard.