Whatever your need, you can do it with Rit ! It will meet all your redecorating, craft, wardrobe and fabric needs. Rit Dye Powder Dye works beautifully on many washable fabrics including: natural fibers, such as cotton, silk and linen; synthetics such as rayon, nylon and acetate; Blends will tint evenly but will not achieve full color. Double the quantity of dye for dark or bright colors. For maximum coverage, use the washing machine technique. Use the stove-top technique for best color results when dyeing with black dye or other dark colors. Great for tie-dye techniques, and can be brushed or rubbed onto wood projects for staining or stenciling.