Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Blue

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About This Invisible/colorless in normal light. Glows bright blue in UV blacklight. Please note, these markers do NOT glow in the dark. You must have a blacklight to get the glow e ffects. Extra large body with broad tip. Contains twice the ink as our standard sized markers! Safe for use on skin. Use for security marking (such as admissions) or create amazing invisible body art designs that glow in blacklight! These are the markers you want for semi permanent invisible marking. These markers can be used for: Event Tickets, Industrial Coding, Security Printing, Coupons, Raffle Tickets, Inventory Control, Advertising, and more! Ink is fast drying and does not remove easily! Avoid sensitive area such as eyes, mouth, and nose Overview Brand : Opticz Ink Color : Blue Number of Items : 1 Point Type : Medium Recommended Uses For Product : Ultraviolet security, mark personal belongings, glow party, secret messages, drawing, UV art Show more