Long-term effects
Producing inks for hair claim that their products undergo strict control and is therefore totally harmless. But one thing – advertising assurances, however the scientific facts.
Agree, potential threat carries any "chemistry". And dyes for the hair is no exception, as their ingredients do in the skin and into the blood.
Which of these ingredients is the key? You should not attach a special importance to the harm of coal tar, which may cause allergic reactions. Ammonia is also calling allergies – there is a paint without ammonia. Hydrogen peroxide, thanks to which the hair thins, becomes dry, brittle.
But what about phenylendiamine, lead acetate, resorcinol, parabens? It's the carcinogens. Acting individually and combines with many other substances, they become aggressive agents during the invasion of living cells, this raises the risk of degeneration into malignant. But manufacturers about the presence of carcinogens in their products silent.
The verdict of the American scholars is harsh: if you use powerful dyes hair regularly and for a long time may develop bladder cancer. And these drugs according to risk researchers tied for second place behind the leader – tobacco use.
In the list of late effects and cancer of the mammary glands, and tumors of the lymph nodes and blood cancer.
Manufacturers strongly disagree with the scientists, arguing that they greatly exaggerate the harm of cosmetic colorants. The dispute continues unabated today. But judge for yourself: in Europe officially banned 22 brands of such products...
The main types of paints
Resistant paint. Quickly transform dark hair to light and Vice versa. Well paint over the gray. Therefore, they are the most popular and... most harmful. Particularly harmful drugs to repaint the hair in the black range.
Because they usually have ammonia, resorcinol, and diaminobenzene, and metalcolour, the application of stable colors in a couple of decades could trigger a tumor of the bone marrow or lymph nodes. These are the findings of the National cancer Institute of the United States.
According to Professor T. Zenga, the processing of hair colors with powerful oxidizing agents of the type of hydrogen peroxide can even occur with carcinogens that are not within these colors.
As Professor David Lewis cites the following statistics: of those who annually uses more of them than nine times the risk of cancer of the blood above 60%.
There is even a theory that cancer of the lymph nodes from fashion Queen Jacqueline Kennedy was provoked ingredients resistant paint which she enjoyed her entire life...
Semi-permanent paint. They are much softer as it has a superficial effect on the hair. Good paint over the gray. But to significantly change the color of can't – too little hydrogen peroxide.
They have no ammonia. But plenty of its toxic derivatives, such as ethanolamine. So at least semi-permanent dye and do not get any cancer, they cannot be considered completely safe.
Organic paint. Made from raw materials of plant origin and therefore are accompanied by a note: "Organic". Good for toning of hair, but the gray paint efficiently enough.
They even have medicinal properties. But they can hardly be called absolutely safe. Because organic dyes also add or hydrogen peroxide, or ammonia, or ammonium salts.
So is there absolutely harmless drugs? Yes, it is henna and Basma. In the henna intended for hair repaint in very dark shades, no PPD, no toxic salts of lead, Nickel, bismuth, cobalt.
Tips dermatologists
– do not paint your hair every month;
– don't change often, drugs of various types and manufacturers;
– avoid extremes, turning it into a blonde, a brunette, from the hair suffer much stronger;
– do not paint them at the slightest inflammation or injury to the scalp;
– before painting pre-do an Allergy test on the wrist. If the skin after 15-20 minutes blush, look for other, more gentle drug.