Blacklight pens are very popular all over the world, many people like use them in private secret application, such as write down some valuables and secret massage. They can use many occasions, art, entertainment and so on. And now, you also can utilize them to enjoy your card marking game.
No matter what you write down with blacklight pens, they are invisible in natural light and can not be seen by people naked eyes. Therefore, if you want to have yourself DIY marked playing cards, you can write the marks on the poker backside, no one can discover them. The invisible ink blacklight pen usually works with contact lenses or luminous sunglasses, we have various kind of them for your choice. Under the luminous contact lenses or ultimate sunglasses, the marks will grows bright and you can read the marks clearly and saftly. All of those products we provide are in good quality.
Do you want to have a try?