High Quality NON-TOXIC Color Changing Thermochromic Powder Pigments. They are Leuco Dye micro-encapsulated and change color activated by temperature. Our Pigments have various colors and activation temperatures. When the temperature rises over certain degree, the pigment turns from one color to another or from color to colorless (translucent white). But the process is reversible- when it gets cold/hot, the pigment turns back to its original color. You can mix with resin, clear or white glue, varnish, medium, paint, liquid plastics/polymers, nail polish, silicone, liquid soap and many more binders. If you’re not sure what to mix the pigment with, we offer ready to use : Thermochromic Paint - could be applied on paper, ceramic, metal, plastic, glass, wood, rubber, canvas and many more surfaces. Thermochromic Fabric Paint - could be applied on any type of fabric/textile, leather and shoes. Our Color Changing products can be used for Home/School projects, Science Experiments, Arts & Crafts, Hidden Messages or Pictures reveal, Color Changing Slime, Goo, Play doh, Epoxy Tumblers, Nail Art, Jewelry, Escape Room Props, Magic Tricks, Gender Reveal Cards/ Banners, Marriage Proposals, Indicators for electronic overheating or wherever your imagination takes you. If you like your project to change color by hand touch, choose activation temperature 77°F(25°C) or 82°F(28°C). Consider the temperature in your room, season or local climate at the time of the experiment and pick a variation accordingly. If you have any questions, don't hesitate to ask. We ship the same business day. Shipping is always FREE