Hydrochronic Ink
Hydrochronic Ink turns from white to transparent when it is wet. The color at the bottom layer will appear, performing a magic of color changing.
Glow-in-the-dark Ink
Glow-in-the-dark Ink is a kind of ink which can absorb, save and emit light. It glows in the dark after absorbing sufficient light.
Encapsulated Scented Ink
Encapsulated Scented Ink is a type of ink mixed with particular aroma in the form of tiny capsules. Scent will be released after rubbing the tiny capsules. There is a variety of scented ink which simulates various aromas like apple, flower, chocolate, etc.
Scratch Ink
Scratch Ink is usually in metallic color which provides good coverage. By scratching the ink, the bottom layer will be unveiled.
Thermochromatic Ink
Thermochromatic Ink is a kind of ink which changes its color with temperature. When the Ink is warmed to a certain degree of temperature, it turns transparent or another color and the original color will be restored after cooling.