Colorfast dyes are special types of dyes that resist fading and running when exposed to water, light, and washing. This quality ensures that the colors remain vibrant and true over time, making them ideal for use in textiles, clothing, and other materials. These dyes are commonly used in the textile industry to produce fabrics that maintain their appearance after repeated use and cleaning. Colorfastness is an important factor for consumers, as it affects the longevity and overall quality of products like clothing, upholstery, and home textiles.