Hands with black henna tattoo.
Black henna contains a dye that can trigger severe allergic reactions
In summer it is very common for making temporary tattoos with henna-a pigment obtained by drying and crushing the leaves and flowers of a bush, the Lawxonia inermis- in places like beaches and promenades, festivals and fairs offered in the villages, markets, or any other outdoor event. Such tattoos are popular precisely because they are deleted after a few days, because as it is not necessary to pierce the skin, is a painless practice.
The seemingly innocuous character of these tattoos, which attracts both adults are reluctant to skin marked forever-and children-to which we find it difficult to get permission from their parents, who see it as a kind of makeup without consequences-fun; however, the Spanish Agency of medicines and health products, and issued an information note in July 2008 warning of the risk of black henna tattoo.
Henna is a natural product that is used to color the hair or make temporary tattoos on the skin, but its color is greenish brown (red brown on the skin), and to darken and get a glossy black tone, and accelerate at the same time attachment to the skin, dyes such as p-phenylenediamine (PPD), which can cause severe allergic skin reactions and sensitization of the affected permanently, so that if subsequently used in contact with these dyes (eg through clothing) suffer reactions that could become serious.
The concentration of PPD in black henna usually reach 15%, while the maximum allowed for external use is 2% and 6% when it comes to hair dyes. And besides, you can not be applied directly to the skin, eyebrows and eyelashes.
The main signs that you are having an allergic reaction in the area where you have made a black henna tattoo, the agency said the drug, are itching, redness, swelling, discoloration or stains, and even blisters or scars. If you have any of these symptoms, you should consult a doctor immediately.
In the long term, sensitization to PPD can cause severe to cause a cross reaction with certain drugs, such as sulfa drugs, antihistamines and certain anesthetic allergic reaction.
How to distinguish natural henna black henna
If you want to get a tattoo with natural henna, you should first check that is not adulterated with other colorants, and not about black henna. So, you avoid skin problems or risk being permanently sensitized and power serious allergic reaction if later you come in contact with such dyes. For this you can look at:
The p-phenylenediamine (PPD) is a dye that is added to natural henna to darken, and may trigger severe allergic reactions in people who get a tattoo made
How long does a henna tattoo stay on skin
Powder color. Natural henna has a greenish brown, and if it is dark or black, you have added dyes.
The color of the tattoo. Natural henna stains the skin of a red brown tone, while the color will be black in the case of using black henna.
The time required to set the tattoo. With natural henna, the process is slow, and up to four hours may be necessary for the tattoo to dry on the skin. So if we say we can remove the dough just one hour after application, it will be because it is black henna.
The duration of the tattoo on the skin. With natural henna drawing usually last three or four days. However, black henna tattoos are maintained over a week.
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