Dye your hair for the new year? First understand the harm of hair dye!
Hair dye is a kind of cosmetics used to dye hair. It can be divided into oxidized hair dye and non oxidized hair dye according to hair dyeing distance. Generally, the former is mostly used.
New year, new weather, everything from the beginning. In the Spring Festival, the business of barber shop is booming. Everyone hopes that Mr. Tony can design a good-looking hairstyle for himself and make himself the most beautiful cub in the village. Some people will choose the most fashionable hair color, so that they can walk on the street with a 200% rate of return.
However, there are still some health hazards of hair dyes. If you want to dye your hair in the new year, you should first understand the hazards of hair dyes.
Hair dye is a kind of cosmetics used to dye hair. It can be divided into oxidized hair dye and non oxidized hair dye according to hair dyeing distance. Generally, the former is mostly used.
The reason why oxidizing hair dyes can dye is that they contain phenylenediamine chemicals, which can make the chromogenic molecules pass through the gap between hair scales, put them into hair quality and hair pulp, immerse them in hair keratin, and have a series of chemical reactions. Nuclear energy can lock the macromolecular pigment substances in the hair, so as to change the color of the hair.
Hair dye is harmful to human body because it contains p-phenylenediamine, ammonia, hydrogen peroxide and other chemicals.
P-phenylenediamine: an internationally recognized carcinogen, can cause skin allergy, dermatitis, eczema and other skin discomfort. If it repeatedly acts on hematopoietic stem cells for a long time, it may even lead to malignant transformation of hematopoietic stem cells, leading to the occurrence of leukemia.
Ammonia: also known as amoniac water, in the process of perm will volatilize a lot of ammonia, which is irritating and corrosive to nose, eyes and skin.
Hydrogen peroxide: also known as hydrogen peroxide, plays the role of decolorization and coloration in the dyeing process. It is a strong oxidant and has a stimulating effect on respiratory tract and skin.
In view of people's concern about the harm of hair dyes to the body, some hair dyes on the market now begin to label themselves as "pure Chinese herbal preparations". In fact, any hair dye, without chemicals, is very difficult to color, the so-called plant hair dye, is not necessarily safe.
In order to avoid the harm of hair dyes to the body, it is suggested that hair dyes should be sold in regular shopping malls or hair salons with good packaging, clear identification, production license, health license, special cosmetic approval number and product standard number. And choose legal, formal, good reputation, hairdresser has the qualification of hairdressing shop.
When dyeing hair, to prevent the hair dye applied to the skin, should first apply a layer of protective products on the skin. Moreover, the number of hair dyeing should not be too much, at most three times a year, and only dye the new hair.
