The human body is the entire structure of a human organism and comprises a head, neck, torso, two arms and two legs. By the time the human reaches adulthood, the body consists of close to 100 trillion cells, the basic unit of life. These cells are organised biologically to eventually form the whole body.
Tattoo inks consist of pigments combined with a carrier, and are used in tattooing.
Tattoo inks are available in a range of colors that can be thinned or mixed together to produce other colors and shades. Most professional tattoo artists purchase inks pre-made (known as pre-dispersed inks), while some tattooers mix their own using a dry pigment and a carrier.
A variety of medical issues can result from tattooing. Because it requires breaking the skin barrier, tattooing may carry health risks, including infection and allergic reactions. Modern tattooists reduce such risks by following universal precautions, working with single-use items, and sterilising their equipment after each use. Many jurisdictions require that tattooists have bloodborne pathogen training, such as is provided through the Red Cross and the U.S. Occupational Safety and Health Administration.
Dermatologists have observed rare but severe medical complications from tattoo pigments in the body, and have noted that people acquiring tattoos rarely assess health risks prior to receiving their tattoos. Some medical practitioners have recommended greater regulation of pigments used in tattoo ink. The wide range of pigments currently used in tattoo inks may create unforeseen health problems.
UV tattoos or blacklight tattoos are tattoos made with a special ink that is visible under an ultraviolet light (blacklight). Depending upon the ink, they can be nearly invisible in non-UV environments, thus they are a popular consideration for people seeking a subtler tattoo. They are particularly popular in the raver subculture.]citation needed[
Although the tattoos are sometimes considered invisible in normal light, scarring from the tattoo machine in the application process may remain, and therefore still show. A UV tattoo becomes visible under blacklight, when it glows in colors ranging from white to purple, depending on the ink chosen. Colored ink is also available, where the ink is visible in normal light (as with a regular tattoo) but the ink will glow vividly under UV light. However, some UV inks are not as bright under normal light as normal tattoo ink and are considered not as vibrant.