Another tattoo alternative is henna-based tattoos, which generally contain no additives. Henna is a plant-derived substance which is painted on the skin, staining it a reddish-orange-to-brown color. Because of the semi-permanent nature of henna, they lack the realistic colors typical of decal temporary tattoos. Due to the time-consuming application process, it is a relatively poor option for children. Dermatological publications report that allergic reactions to natural henna are very rare and the product is generally considered safe for skin application. Serious problems can occur, however, from the use of henna with certain additives. The FDA and medical journals report that painted black henna temporary tattoos are especially dangerous. Black Henna or Pre-Mixed Henna Temporary Tattoos May Be Harmful - see below for safety information.
According to George Orwell, coal miners could develop characteristic tattoos owing to coal dust getting into wounds. This can also occur with substances like gunpowder. Similarly, a traumatic tattoo occurs when a substance such as asphalt is rubbed into a wound as the result of some kind of accident or trauma. These are particularly difficult to remove as they tend to be spread across several layers of skin, and scarring or permanent discoloration is almost unavoidable depending on the location. An amalgam tattoo is when amalgam particles are implanted in to the soft tissues of the mouth, usually the gums, during dental filling placement or removal. Another example of such accidental tattoos is the result of a deliberate or accidental stabbing with a pencil or pen, leaving graphite or ink beneath the skin.
If you know you eventually want a sleeve, or if you’re going full-sleeve right out the gate, then Gualteros recommends starting at the shoulder. From there, you’ll work your way down the arm. “If someone came to me and let me do whatever I wanted, I’d start from the top with something that fits the body,” he says. “Something that doesn’t look like a sticker on the arm, then bring it down and fill it in.” Alternatively, he notes that some of his customers and fellow artists prefer to start at the wrist and work their way up, but on the same principle: By starting on one end, you aren’t guessing where to place everything else. Instead, you’re moving up or down the sleeve and filling it in with some kind of order.
The word tattoo, or tattow in the 18th century, is a loanword from the Samoan word tatau, meaning "to strike". The Oxford English Dictionary gives the etymology of tattoo as "In 18th c. tattaow, tattow. From Polynesian (Samoan, Tahitian, Tongan, etc.) tatau. In Marquesan, tatu." Before the importation of the Polynesian word, the practice of tattooing had been described in the West as painting, scarring or staining.