Rit Dye and Dylon Permanent Fabric Dye work in different ways and each have their own strengths. Rit dye, which is a multi-purpose union dye, is versatile, easy to use, and non-toxic. You can dye natural fibers like cotton, linen, wool, silk, and also rayon and nylon fabric. There are many colors and you can easily mix them to get custom colors. Dylon permanent dye is a fiber reactive dye, meaning it reacts chemically with cellulose found in cotton, rayon, and silk to create a permanent bond. It won't fade and the colors will be more intense than Rit dye. Watch the video to find out more.