The advisory comes after the families of three teenage tourists reported bad reactions to the tattoos, some of which may be made by a chemically treated "black henna" that is being billed as all-natural, the Associated Press reports.
The tattoos, painted on the skin with a pen-like tip, typically last three to four weeks. Frequently offered by tourist-luring T-shirt shops and souvenir stores, they often depict flowers, daggers and Asian art. – (HealthDayNews)
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