What are the harms of hair dye to hair

Hair dyes contain a lot of irritating chemicals, so the controversy about hair dyes has never stopped, but some people still like to make a fuss about their hair, often changing the color of their hair as their mood changes, but they don’t care whether hair dyes are harmful to health. Hair dyes will first harm the scalp, damage the hair scales, and make the hair lose its protective layer, so that the hair will become frizzy, rough, dull, etc.

1. In fact, the impact of hair dyeing on health lies in the fact that the scalp comes into contact with the hair dye, which may cause skin allergies due to some of the ingredients in it. Therefore, hair dye products have terms of use printed on them: users are advised to apply a small amount of hair dye on the inside of their forearms 48 hours before dyeing their hair, and then dye their hair after no allergic reactions occur.

2. Regarding skin allergies, the human body is a complex organism. There are as many potential allergens as there are substances around us. For example, peanuts themselves are harmless, but for some people they are serious and even fatal allergens. Some people are even allergic to rice. So, because rice may cause allergies in some people, do you choose not to eat it?

3. In fact, when it comes to allergic incidents, we should not only look at individual cases, but also the proportion of occurrence. The incidence of hair dye allergy incidents is not so high that hair dye should be blacklisted as a product that is harmful to most people. To reduce the chance of allergies, you can use some methods to protect yourself: people who have never dyed their hair must do an allergy test before the first dyeing; people who often dye their hair should choose hair dye products from regular manufacturers; do not wash your hair one to two days before dyeing, so that the oil layer can separate the scalp from the hair dye; do not dye your hair when there are wounds or allergies on the scalp itself.

When dyeing hair, the hair scales will open, absorb pigments, and then close again. The hair scales are forced open, and the dyed hair will be more or less damaged compared to the original hair. However, if you dye your hair ordinary dark brown, chestnut, burgundy, etc. without bleaching, the damage may not be serious enough to be visible to the naked eye. At this time, you will feel that the glossiness of your hair has decreased, which is largely caused by not using good hair dye products and not taking good care of your hair.

4. If you want to dye your hair a lighter color, you need to bleach it first. The hydrogen peroxide that plays a bleaching role will damage the hair to a greater extent. If you dye your hair lighter, your hair will appear duller.

5. However, if the hair has been dyed before, it will appear shiny again because the pigments and hair care factors fill the cavities in the hair core when it is dyed again.

6. Hair dyeing is not a one-time thing. If you want to maintain beautiful hair color, in addition to the hair dye products used and the technician's skills, post-dyeing care also plays a big part. Stick to using color-protecting products after dyeing, blow-dry along the direction of the hair scales, and use leave-in hair oil on slightly frizzy hair to quickly restore the gloss.

The above is our detailed introduction on the damage of hair dye to hair. Through the above introduction, we also know that hair dye is very harmful to the scalp, so it is recommended that friends who often dye their hair must look at the damage of hair dye to the scalp. In more serious cases, it can also induce cancer and cause allergies. So for your own health, please choose hair dye carefully!