For over 35 years, Jacquard has been dedicated to meeting the needs of artists and crafters everywhere. Family owned and operated, we have been the leader in artist materials for fabric and are committed to offering top quality materials to everyone from professional artists to hobbyists and students. Jacquard's Acid Dye beautifully colors protein fibers with ease. Hard-to-dye fibers such as wool, silk, alpaca, feathers, animal fur and nylon take the dye like a magnet when submerged in the dye bath. The self-leveling dye ensures perfectly even colors with no blotchiness or streaks. Acid dye lends itself to bright, vibrant colors including fluorescents! Create dazzling fiber works with the 48 colors available. To prepare the dye bath, heat a pot of water on a stove to 180 degrees F (80 degrees C) and add the dye. How much dye you need will depend on how much fabric you are using and the desired color. Review the technical information sheet for specific measurements. We also suggest doing a test swatch to ensure the shade is perfect for your project. Once the dye is mixed, add your pre-soaked fabric, ensuring the piece can move freely in the dye bath. Then, add your acid of choice, whether it is vinegar or citric acid. This is the only acid involved in the process, the dye itself is not acidic. The acid creates a chemical reaction that binds the dye to the fibers and makes them permanent. You can watch as the dye is magnetized to the fibers, leaving only the water behind to be easily disposed of. Along with traditional submersion or tub dyeing, you can also modify the dye to be used in a wide variety of techniques. Mix the dye with a thickener to use for screen printing or create a highly concentrated solution to use in silk painting. Be aware, the silk will need to be steam set once painted. Once mixed, the dye is shelf-stable, allowing you to mix large batches at once and store for the future. Some colors may need to be reheated before use.