Permanent tattoos are so difficult to remove from skin. One was because of tattoo should inject the ink into the layers of the skin called the dermis, the layer under the skin after epidermis. When still in the epidermal layer of the tattoo can be removed, but the manufacture of tattoo ink is injected into the deepest layers of the skin.
If the views of the layers, the top layer of skin called the epidermis. At this layer consists of five layers, the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum and stratum corneum.
Two of the top layer, ie stratum lucidum and stratum corneum, is flat and dry skin cells, water resistant and serves to protect the skin. Cells and exfoliates the skin will change began in the stratum basale up to the surface of the skin in one month.
Well, as it aims to make drawings or writings lasting, eventually drawing the tattoo to be injected deeper penetrating layers of epidermis. Not finished just there, there are other effects if the skin layer ‘torn to pieces’. Injection of tattoo ink in the skin layer will trigger an immune system reaction (immune) body, which ironically would make the tattoo stuck on the skin longer.
Skin cells that attack foreign substances called phagocytes or phagocytes (cell-eaters). Eater cells will engulf and consume the ink particles. Then, fibroblasts (cells that produce collagen) will lock together phagocyte tissue under the skin, just below the epidermis that meet the dermis, approximately 1 mm from the skin surface. This allows the ink in the skin layers over the years.
There are several reasons that make more difficult to remove the tattoo color tattoos are used and the tattooed skin color. Certain tattoo colors like black, green and brown will be more easily removed than the red, orange and white. And a tattoo of one color such as black or blue is much easier to remove. For skin color, people with dark skin a bit longer to remove tattoos than people with lighter skin color.