The most common question for a person who has just made a tattoo is “do you know that this is for life?”. Let us omit the reaction of the person to whom he is addressed (as if he did not know what exactly he did), and think about it – and why for life? After all, the skin cells are constantly
how is it that a tattoo can hold out for 10 years, and 40, and even 90?
It turns out that the whole thing is in the work of the body’s immune system, namely, white blood cells – macrophages . It is they who keep the pigment in the middle layer of the skin even decades after it got there by means of a tattoo machine.
Macrophages perceive the pigment as a substance foreign to the organism which it, in essence, is) and, accordingly, absorb it. These cells live less than the organism as a whole, and when they die and decay, the released pigment is picked up by their successors.
The scientists’ hypothesis was confirmed by studies on mice with green
stripes tattooed on their tails. These mice were modified in a special way so that the macrophages in their skin could be destroyed without harm to the animal itself. Some time after the tattoo, the experimental specimens were injected with a substance destroying the macrophages that did its job, completely killing these cells within two days – but the tattoo did not disappear, as new cells replaced the dead cells.
Experts conducted another experiment
transplanted some tattooed skin of an albino mouse, which did not have tattoos. After six weeks, it turned out that most of the pigment was now carried by the recipient’s own cells, not by the donor. Perhaps the new discovery will help create new ways to remove unwanted tattoos. read more :https://www.theviralflow.com/why-dont-tattoos-disappear/