Henna, which is called Mehndi in Indian, is a plant that is widely used as a natural dyeing agent all over the world. It was introduced to Korea several years ago, and is now popular amongyoung people as a hair-dyeing agent and for temporary tattooing. The leaf of Henna contains naphthoquinone, which is the main coloring agent, and is not known to case skim sensitization. However, another coloring agent, in most cases, para-phenylenediamine space (PPD), is added to Henna tattooing, in order to speed up and darken the color. We report a case of allergic contact dermatitis in a 25-year-old female, which developed 3 weeks after Henna tattooing.
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