Baked oil is to supplement nutrition to hair and deeply nourish scalp. Hair dyeing is to fill the hair with the pigment contained in the hair dye, and then change the color of the hair, and it will make the hair look full, but when these substances slowly disappear, the hair will return to its original appearance.

If you bake oil frequently, some heavy metals produced in the process will do harm to human body. In the process of baking oil, some heavy metals, such as lead and mercury, will enter the human body through the hair. When these heavy metals accumulate to a certain amount, the body will be poisoned. Frequent baking of oil will also lead to leukemia, and the chances of getting sick will be much greater.