Do I need to wash my hair before dyeing it

Hair dyeing can be said to be a popular style in the 21st century, but many people cannot use some correct methods when dyeing their hair, especially whether they need to wash their hair before dyeing. In fact, there are routines here.

You should not wash your hair before dyeing it. The oil secreted from the hair can protect the scalp and prevent infection. Moreover, these oils and dust on the hair will not affect the color effect at all. When we dye our hair, the hair scales on the surface of the hair will open, so that the hair dye can smoothly enter the hair and achieve the dyeing effect. However, the scalp is the place with the most and densest hair follicles in the human body. The harmful substances in hair dye can easily enter the human body through the hair follicles. Even if the hair dye does not directly contact the scalp, it will form gas through volatilization and enter the human body.

Therefore, we need to use the oil on the scalp to help us form a protective film on the surface of the scalp, so that we can block those substances that may harm our health.

If you really need to wash your hair before dyeing it, it is recommended to wash it two to three days in advance. When washing your hair, you should be gentle and avoid scratching your scalp. Otherwise, it may easily cause skin allergies on your head when dyeing your hair or pose a health risk to your body. Therefore, in order to minimize the potential harm of hair dyeing to the body, it is recommended not to wash your hair. Because the sweat pores on our head are all open after washing, it is more likely to have allergies when dyeing your hair.