Hair coloring: harmful or not

All experiment lovers know: changing hairstyles and hair colors is the easiest way to bring variety to your life. We do not argue with this, we just want to understand how such transformations are safe and how frequent dyeing affects the hair.

To begin with, each hair consists of three layers:

  • medula is the brain substance through which food enters the hair;
  • cortex is the main substance that gives the hair strength and elasticity;
  • cuticle is a protective layer that consists of keratin flakes.

In order to change color, the coloring pigment must get inside the hair, that is, slightly cut its cuticular layer. The cuticle is revealed only in conditions of high 40H: with values ​​from seven and above.

The acidity of the scalp is 4.5-5.5 43H. Therefore, in order for the pigment to penetrate the hair, alkaline or acidic components are added to the dyes. Amines are derivatives of ammonia, it is an alkaline component that is found most often in paints.

It increases 57H so that the amount of artificial pigment that is enough to change the hair color by several tones can penetrate the hair.

Photo: cdx. c. ooyala. com

Hair dye is quite harmless a mixture of chemical components.

In fact, any dye changes the color of the hair, but the principle of each is slightly different. The choice depends on what color you want to get and how long the paint should last.

In permanent paints, in addition to ammonia or its substitute, it is necessary to have hydrogen peroxide. Ammonia helps to open the hair cuticle, and the oxidizer partially leaches the natural pigment and shows the color of the dye. With the help of such paint you can change the color by several tones, completely paint over the gray hair or even lighten the hair.

Due to the fact that ammonia allows the dye to penetrate very deeply, permanent paints cannot be washed off. Therefore, if you want to return to your natural color, you have to wait until the hair grows back.

Permanent paints damage the protective layer of the hair more than others: the cuticle opens, but there is no natural mechanism to close it. In addition, the oxidizing agent along with the pigment leaches nutrients from the hair. Therefore, if you have chosen such a paint, then you need to remember about special care.

Minimum - acid shampoo and indelible conditioner. Shampoo will help restore 102H, and the conditioner will “smooth” the cuticle and protect the hair from environmental influences.

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For those who want softer exposure to hair, there is a semi-permanent paint. It does not destroy the structure of the hair, however, after you wash your hair about five times, the color will begin to fade.

Since such paints do not contain ammonia and there is almost no oxidizing agent, they are not suitable for lightening: natural pigment simply cannot be removed.

This type of paint is perhaps the safest. Direct-acting dyes are available in the form of tinted shampoos, foams, masks and even crayons. In such dyes, there is already a ready-made pigment - it only needs to be applied to the hair. Due to the fact that there is no need to show color, you do not need additional oxidizing agents that would harm your hair.

Direct dyes have acidic components, but they do not open the cuticle, so the hair dyes superficially. It is easy to wash off such paint with water.

The days when lead was added to the hair dye, and dyeing could cause real damage to health, have passed. And hardly anyone will miss them. Today, everyone can look the way he wants, and in the hands of an intelligent master your hair will always be safe.

Photo: zoom. me

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