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Before getting a tattoo, understand what is injected into the skin. The reason why tattoo ink has a lot of stable colors is because it uses heavy metal compounds, which sounds a little weird, right? While living in the tattoo room, racking my brains to create a sterile environment to avoid tetanus and other germs, the tattoo artist simply and rudely injects heavy metals directly into your body, which is terrible to think about.
When tattooing, many needle tips penetrate your skin, and then carry large and small ink particles through the epidermis to the dermis. At this time, the tattoo was drawn on the skin. The ink remaining in the body is surrounded by various cells.
Some ink particles are relatively small, which means that small particles can pass through and the phagocytosis of white blood cells is eliminated. This is why even if the tattoo is permanent, it will gradually fade. However, some particles are very large. When your immune system finds these foreign bodies, it is difficult for white blood cells to be encapsulated, just as ants cannot swallow an elephant in one bite. Therefore, the relative size of white blood cells and pigment particles is the key to tattoo removal.
If these paint blocks are broken with a short laser pulse, they will become very small, which will accelerate the speed and efficiency of the white blood cells to swallow the paint blocks, and then take them to the liver for treatment, and discharge through the capillary lymphatic vessels under the skin. So how does the laser break up the pigment particles?
We all know the principle of thermal expansion and contraction. If we use a very, very hot light source to irradiate the ink very quickly, the irradiated particles will start to heat up very quickly. And it will expand when heated, but the other side will remain unchanged and react, which will cause the internal pressure difference to increase, and then the entire particle will be broken. Therefore, the speed of removing the laser tattoo is very important. The longer the irradiation time, the greater the impact on human tissues.
When laser hits the tattoo, the surface of the skin will bulge and appear creamy white. Because the skin pigment is heated rapidly, gas and plasma are formed under the skin, and the gas is released from the surface of the skin that is penetrated by the laser, causing this short-term side effect. In the further removal process, once more ink is removed, there will not be so much. Tattoos are a means of expressing personality and aesthetic views, but think twice before acting, because it is not easy to remove.