Allergies to hair dyes are more frequent

The increase of people who dye their hair, in addition to the decline in the age of people who do, are increasing the cases of allergies to hair dyes worldwide, causing from severe allergic reactions, up to Cancer .

Among the most frequent symptoms and signs of this allergy to hair dyes are: inflammation of the lips and eyelids, breathing difficulties, redness and itching of the scalp, and peeling.

The dermatologist Aurora Guerra, member of the Spanish Trichology Group of the Spanish Academy of Dermatology (AEDV), explains to EFE that the permanent synthetic dyes, the most used, have a high concentration of oxidizing products such as hydrogen peroxide and ammonia, which can damage the hair shaft, but also the skin.

On the other hand, Brian Plunkett, trichology consultant (science that studies hair) that has been researching hair dye allergies for more than 10 years, points out that "dye allergy can occur at any time, so a skin test before each color is essential.

In accordance with The British Medical Journal, manufacturers should place more emphasis on these to raise awareness and improve testing protocols, because there are studies that have linked exposure to paraphenylenediamine with higher rates of bladder cancer , for example.

The allergy to this compound is quite uncommon and affects 1 of 250 thousand people, in most cases the effect is a mild rash, however, there can also be serious consequences, such as severe skin irritations or even anaphylaxis .

In addition, an allergic reaction does not necessarily manifest itself the first time a product is used, it can occur after several uses, therefore, it is essential to make a test, applying a small amount on the skin 48 hours before treatment each time it is applied. use, according to biobiochile.cl

However, this is not the only substance on which the Food and Drugs Association (FDA ) has warned previously, because it is suspected that others such as 4-chloro-m-phenylenediamine, 2,4-toluenediamine, 2-nitro-p-phenylenediamine and 4-amino-2-nitrophenol, 4-MMPD and tar mineral, are not only capable of producing an allergic reaction, but have also been considered carcinogenic .