Drying time depends primarily on two factors: On how much Paint you’ve applied and the ambient temperature. In general, the thinner the layer of paint applied, and the warmer the ambient temperature, the shorter the drying time will be. A small drawing on a piece of paper should dry within 5-10 minutes in optimal conditions. It’s important to note that Electric Paint is most conductive when dry, so wait until it feels dry to the touch before testing your circuits. Because conductivity increases as the paint dries, it’s important to let the paint dry completely before testing it, particularly if your project requires calibration.