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MAGIC PURPLE WATERPROOF Combo UV Light Painting Marker Invisible Ink Pen 2 In 1 - $6.44. À VENDRE! Magic Purple Waterproof Combo UV Light Painting Marker Invisible Ink Pen 2 In 1 Length:13cm Material:ABS 100% Brand New And High quality Product:UV Light Pen Type:Highlighter Color:Green,Blue,Pink,Yellow Note: You can write on most surfaces, but whether it can stay on the surfaces, it depends on what kind of the 394820213929

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Our Opticz brand UV blacklight reactive invisible ink markers use high quality invisible water based ink for outstanding blacklight effects. Perfect for identification marking, body art, and other stealthy security uses. Safe for skin too! Perfect for metal, glass, plastics, paper. Totally invisible, won't wash off easily, and is only visible under blacklight. These are the markers you want for for invisible, only visible in blacklight marking.