We offer NON-TOXIC Color Changing Thermochromic Paints, which change color when exposed to different temperatures. Our Paints have various colors and activation temperatures (the point when it changes color). When the temperature rises over a certain degree, the paint turns from one color to another or from color to colorless (translucent white). But the process is reversible- when it gets cold, the paint turns back to its original color. It could be used again and again. Temperature Activated Color Changing Thermochromic Paint comes pre-mixed, ready to use. You can apply it with a regular paintbrush, the stencil method, airbrushed, sponged on, painters roller or finger-painted. Thermochromic Paint could be applied on paper, canvas, ceramic, glass, rubber, wood, plastic, metal, and many more surfaces. If your project is application on fabric, please choose our Thermochromic Fabric Paints which has different components so it can adhere to fabric. Thermochromic Paint is perfect for Arts & Crafts, School & Home Projects, Science experiments, Secret Messages, Gender Reveal Cards & Banners, Marriage Proposals, Escape Room Props, Magic Tricks, Color Changing Phone Cases, Cold Beverage Labels, Electronic Overheating Indicators or whenever your imagination takes you. This listing is for 2 oz (60 ml) container that covers approximately 5 square feet, depending on the type of surface you're applying on. Please, consider your ambient temperature, local climate and currant season before choosing activation temperature for your project. If you have questions, don't hesitate to ask. We ship the same business day. Domestic shipping is always FREE.