How did you get the color of the tattoo? What is the principle of coloring?

With the tattoo needle as the carrier, the tattoo pigment was injected under the skin (below the epidermis and above the dermis) for about 2MM to form a permanent pattern.

The principle of tattoo is to insert pigment into dermis by hand or tattoo machine. When inserted into the dermis, some dermal cells are destroyed, so that the pigment is mixed around the damaged cells, which is cloudy on the paper like brush ink, and the pigment perineum remains stable between cells.

With the self-repair of human immune system, those tiny pigment particles will be swallowed up by large cells and stored in those cells for a long time, and finally transformed into stable "fibroblasts" with pigment color and rooted between epidermis and dermis. Pigment particles only change physically in the whole process, while human tissues change physically and biochemically in the whole process.

Matters needing attention

The essence of modern tattoos is to use high-frequency needles to pierce the ink into the skin, leaving patterns and colors. Skin is the natural barrier of human body, which will repel dye foreign bodies and cause allergic reactions. Poor disinfection can also lead to bacterial and fungal infections in skin wounds. Tattooists have not received special medical training, and the operation is not standardized, so the risk of skin infection is high. The immature immune system of minors is more fragile.

Tattoos require high hygiene conditions. Tattooing needles act on the skin, which may become a medium to spread diseases such as AIDS and hepatitis.

Baidu encyclopedia-tattoo