About 5% of all hair colors cause allergies. The allergy from hair dye can be manifested in different ways: in the form of redness of the skin, in the form of an allergic itch in the area where the skin comes into contact with the hair, in the form of blisters and swelling, and sometimes anaphylactic shock can occur.
Symptoms
Women who have a natural hair color, are now less and less, and therefore problems with allergies to some components of dyes become very common. According to one of the publications, such an allergy is recorded in a third of allergy cases that occur all over the world.
Allergic dermatitis is a reaction of the body to certain components of the dyes and has signs. However, it is not always possible to identify the origin of the allergy.
The main attributes include:
- In the process or after staining, irritation may appear;
- a day or two on the scalp may show a pronounced redness, which is very often very few days later, also burning or itching (including light);
- peeling or swelling of the skin.
With the following staining, the body, after contact with the allergen, intensifies its reaction. Itching and redness will be more noticeable and spread over a larger area of the skin, it is possible that a part of the skin that is not a staining zone will be affected. May be affected neck, forehead, decollete. Sometimes on the skin appear lymphatic vesicles, which can be seen with burns, with the lymph nodes swollen. If the case is not severe, then it is quite easy to help: it is enough to use a lotion based on hamamelis or chamomile. In severe cases, immediately consult a doctor. A specialist in the quality of therapy can prescribe antiallergic drugs and hormonal drugs.
List of substances that most often cause allergies
PPD (4-ParaPhenyleneDiamine) C6H8N2 - this component is now present in almost half of the hair colors. This substance is obtained by mixing the paint with an oxidizing agent. As an oxidizer, as a rule, acts hydrogen peroxide. This substance is often used in the manufacture of cosmetic products or paints for tattoos.
In some countries, for example, in Sweden, Germany and France, paints containing this substance have been banned because they are hazardous to health.
6-hydroxyindole, p-Methylaminophenol (5), Isatin - these components can also cause an allergic reaction. They are used in the manufacture of temporary dyes for hair, gasoline, ink for ballpoint pens and medicines.
There are hair colors that have the inscription "do not cause allergies". However, such an inscription is not confirmed in any way. Even if the paint says that it does not contain fragrances, it does not guarantee that it will not cause an allergy. Do not save from allergies and paint with the inscription "product on a natural basis" or "natural product".
Typically, the allergic reaction develops within seven to thirty hours after the staining procedure.
Pre-testing the paint before painting
It is necessary to mix the hair dye with the oxidant and apply a small amount to the area behind the ear or to the elbow bend. This choice of space is due to the fact that in these areas the skin is most sensitive. Reactions should be expected within two to three days. It should be remembered that the skin where the paint is applied should be clean and free of damage. If after the expiration of the necessary time no signs of allergy have appeared (rash, irritation, redness), then the test gave a negative result and you can paint your hair with this paint without fear. If there is even the slightest reddening or other manifestation, the test is positive and you can not use the paint.
Allergy from paint is definitely an unpleasant disease. If there is a tendency to allergic diseases, it is better not to risk and before the procedure consult with a doctor. The expert will help to choose a sparing version of the paint for staining, which means that it will be possible to avoid an allergic reaction.