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A tattoo is a modification of skin color in a drawing, a picture or a text is created and plasma with sterile needles injecting ink or some other pigment under the skin of a person.

A tattoo is a form of body modification where a design is made by inserting ink, dyes and pigments, either indelible or temporary, into the dermis layer of the skin to change the pigment. The art of making tattoos is tattooing.

Tattoos fall into three broad categories: purely decorative (with no specific meaning); symbolic (with a specific meaning pertinent to the wearer); and pictorial (a depiction of a specific person or item). In addition, tattoos can be used for identification such as ear tattoos on livestock as a form of branding.

Types
The American Academy of Dermatology distinguishes five types of tattoos: traumatic tattoos, also called "natural tattoos", that result from injuries, especially asphalt from road injuries or pencil lead; amateur tattoos; professional tattoos, both via traditional methods and modern tattoo machines; cosmetic tattoos, also known as "permanent makeup"; and medical tattoos.

Equipment
Some tribal cultures traditionally created tattoos by cutting designs into the skin and rubbing the resulting wound with ink, ashes or other agents; some cultures continue this practice, which may be an adjunct to scarification. Some cultures create tattooed marks by hand-tapping the ink into the skin using sharpened sticks or animal bones (made into needles) with clay formed disks or, in modern times, actual needles.

The most common method of tattooing in modern times is the electric tattoo machine, which inserts ink into the skin via a single needle or a group of needles that are soldered onto a bar, which is attached to an oscillating unit. The unit rapidly and repeatedly drives the needles in and out of the skin, usually 80 to 150 times a second. The needles are single-use needles that come packaged individually.

Modern associations
Tattoos are strongly empirically associated with deviance, personality disorders and criminality. Although the general acceptance of tattoos is on the rise in Western society, they still carry a heavy stigma among certain social groups. Tattoos are generally considered an important part of the culture of the Russian mafia.
Current cultural understandings of tattoos in Europe and North America have been greatly influenced by long-standing stereotypes based on deviant social groups in the 19th and 20th centuries. Particularly in North America, tattoos have been associated with stereotypes, folklore and racism. Not until the 1960s and 1970s did people associate tattoos with such societal outcasts as bikers and prisoners. Today, in the United States many prisoners and criminal gangs use distinctive tattoos to indicate facts about their criminal behavior, prison sentences and organizational affiliation. A teardrop tattoo, for example, can be symbolic of murder, or each tear represents the death of a friend. At the same time, members of the U.S. military have an equally well-established and longstanding history of tattooing to indicate military units, battles, kills, etc., an association that remains widespread among older Americans. In Japan, tattoos are associated with yakuza criminal groups, but there are non-yakuza groups such as Fukushi Masaichi's tattoo association that sought to preserve the skins of dead Japanese who have extensive tattoos. Tattooing is also common in the British Armed Forces. Depending on vocation, tattoos are accepted in a number of professions in America. Companies across many fields are increasingly focused on diversity and inclusion. Mainstream art galleries hold exhibitions of both conventional and custom tattoo designs, such as Beyond Skin, at the Museum of Croydon.
In Britain, there is evidence of women with tattoos, concealed by their clothing, throughout the 20th century, and records of women tattooists such as Jessie Knight from the 1920s.