Black Ink by Asmadi

This ink is just ordinary ink, but when it comes into contact with Magic it will cause an effect that can make the spectators surprised and don't believe it. The ink written on the plastic surface can penetrate the surface of the box. The spectator can check and feel plastic surfaces and boxes. because, the method used in this effect does not damage the plastic and box.
To create this effect use a tool that is easy to find at home and easy to do.