Try not to hold your baby for a few days before you dye your hair, because the chemicals in hair dye can irritate your baby’s skin or airways and have a negative impact on your baby’s health. Hair dye is a cosmetic product that colors the hair and commonly contains colorants such as p-phenylenediamine, which is an internationally recognized carcinogen. Hair dye contact with the skin, hair dyeing process heating, will make benzene organic substances through the scalp into the capillaries, with the blood circulation to the bone marrow, long-term can cause hematopoietic stem cells malignant change, leading to the development of leukemia. As a few days after hair dyeing, there will be residual potion left on the hair, which will come into contact with the baby and also be easily eaten by the baby in the mouth, which is harmful to the baby’s health. The irritating smell and chemical composition of hair dye can affect the baby’s tracheal mucosa and skin, causing allergies and damage to the lungs. You can hold your baby about a week after hair dyeing, after a few washes, and when your hair does not have an obvious irritating smell, which is less harmful to your baby at this time. Apply a special post-dye hair care product after dyeing to soften and stabilize the hair structure. Massage gently with your fingertips when shampooing, do not rub hard.