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UV tattoo
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. Therefore they are a popular consideration for people seeking a subtler tattoo, and are particularly popular in the raver subculture.
Although the tattoos are sometimes considered invisible in normal light, scarring from the tattoo machine in the application process will remain, and therefore still show. Smaller tattoos will be easier to recognize as tattoos, while larger tattoos are more likely to be recognized as a scar at first glance.〔(【引用サイトリンク】url=http://www.inkdoneright.com/white-ink-tattoos )〕 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.
== Arguments against UV tattoos ==
No tattoo inks have ever been approved by the United States Food and Drug Administration because the FDA "has not traditionally regulated tattoo inks or the pigments used in them".〔(【引用サイトリンク】url=http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm048919.htm )〕 Claims made that UV Tattoo Ink is "FDA Approved" when used for tattooing appear to be fraudulent; some UV-reactive tattoo inks may have been approved by the FDA for food-related purposes (such as marking food animals, like fish), but UV Tattoo Ink is also many times more expensive than regular tattoo inks. Some people have had reactions to ingredients in the ink (especially to phosphor based tattoo ink),〔(【引用サイトリンク】url=http://www.inkdoneright.com/glow-in-the-dark-tattoos/ )〕 ranging from minor itching to dermatitis. Several UV inks are suspected carcinogens and allergens and at this time no research has been conducted into the side effects of long term exposure. Although many people who have received UV or blacklight tattoos have had physical effects on the skin, any ink could cause a reaction. This can be a result of not protecting the tattoo from UV rays within 3 months of receiving the tattoo process or by using scented cremes or lotions on the tattoo area. This can damage the ink, causing it to become a normal ink color in all light. In time, it may also not glow in black lighting. /blue UV inks are known to yellow or turn slightly brown with sun exposure. Color/black UV inks are known to become colored in all lighting. Therefore, it might permanently appear as a regular tattoo.
This wiki used to state that "Another disadvantage of UV tattoos is that some of them use magnetic ingredients. If the tattooed person ever later needs to have an MRI, the magnetic material can be displaced by the strong magnets of the MRI machine. Health care professionals are warned to use MRI with caution if the patient has UV tattoos.〔22 May 2014 Ross University School of Medicine, lecture on radiographic anatomy by Dr. Enitan Odutola〕" this idea is based on theory however and in practical use does not occur as MRIs are now callabrated to accept minute amounts of magnetism. Even if a patient has an embedded rfid tag which has magnetic parts the only affect of an MRI would be slight blurring around the areas with trace amounts of magnetic material on the produced image.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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