Dye sublimation is a printing process that uses heat to transfer dye onto materials such as fabric, plastic, or paper. The dye is first printed onto a special transfer paper in a solid form. When heat and pressure are applied, the dye turns into a gas and permeates the surface of the material, creating vibrant and durable images. This technique is commonly used for creating custom items like t-shirts, mugs, and banners. The results are often more resistant to fading and cracking compared to traditional printing methods, making dye sublimation a popular choice for high-quality, long-lasting prints.