If ever we have read the recommendations and instructions of home hair dyes, know that it is possible that the product can we generally an allergic skin reaction. We may think that this has never happened to us and therefore we should not take any precautions, but it is possible that after having dyed mucas times with the same dye, we begin to cause itching and other uncomfortable symptoms, but it is also true there are alternatives that do not give allergy.
The conventional hair dyes have a number of chemicals from their compounds that can trigger allergic reactions in people who apply. As the use of these products to change the hair color are increasingly used, so does the number of people who are allergic to them. Among the compounds that may cause allergic reaction are ammonia, resorcinol or para-phenylenediamine, also known as p-phenylenediamine or PPD, although the latter is often the cause of the allergy.
The hair dyes can cause itching us
As mentioned, the allergy to hair dyes can appear suddenly, even though we had never happened, as continued contact with the substance may be the factor that causes the reaction to it. The reason for the use of phenylenediamine as an ingredient in these products is that they have low levels of toxicity and also produces a natural hair color (although itself is a colorless substance) and enduring well subsequent washes. It is used in both permanent and semi-permanent dyes (color washes).
Symptoms of an allergic reaction to the dye
Symptoms resulting dye allergy can range from the mild, such as redness or itching, or evolve into more serious.
- Redness of scalp ears and neck (skin contact areas with dye).
- Itching in areas that have been in contact.
- Pimples and blisters may appear.
- Appearance of dark areas on the skin.
- Swelling of the contact areas: scalp, eyes, face, ears and neck.
- In more severe cases can lead to respiratory difficulties and anaphylaxis. These are rare, but not impossible.
If we notice that after the dye apply ourselves begin to notice itching or redness in the areas that have maintained contact with the dye, we will withdraw as soon as possible with water. If it continues, we will go to an emergency room doctor, but even disappear should consult a dermatologist.
How to prevent allergic reactions
To prevent allergic reactions, we follow the recommendations of the containers thereon. These indicate that before applying the dye should definitely try 14 or 48 hours before. We'll take a little of the product (before mixing with hydrogen peroxide or hydrogen peroxide) in any area of the body, such as behind the ear, wrist or hand, and leave for 20 minutes. Then clarify with water and will be watching if some kind of itching or redness of the area displayed, but if these symptoms occur 20 minutes before the time you retire.
It is a precaution that may seem tedious, or surely we will remember not to do it, but in that case we can always try it in the same areas a while before pouring it into the hair. It is important because you may develop allergy to the dye after it is frequently used above. We will also ensure that the package is not expired, neither was open. We apply it with gloves, and we care not to come into contact with sensitive areas, such as the skin of the face, especially the eyes.
We must warn our hairdresser if we hair dye allergy
Nevertheless, this does not mean we can not teñirnos hair, hair dyes are free parafenildiaminas, this ingredient is also banned in some countries, there are hundreds of alternatives. Still, before using them directly on the hair should also be tested to see if they produce allergy, if it were a reaction to other ingredients.
We speak of home dyes, hairdressing but also contain these products. If you have allergy to PPD previously we tell the barber or hairdresser for ringworm us with other hair dye.
Other products containing para-phenylenediamine
Within the cosmetic and beauty products, it appears in those with a dark color, as some makeup and mask tab, and in the ink of temporary henna tattoos.
It is also present in dyes applied to other products such as fabrics, furs and leather, some socks, shoe polish shoes, rubber and wood, and some paint and varnish. Diesel and some oils may also contain it, and even products photographic development and printing. Therefore, in professional sectors where these materials and their tinctures are working, workers must follow a series of precautions to prevent the development of allergies.
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