Dyes most fabrics, wood, wicker or any other porous surface. Give old favorite wearable s a Good As New look dye separates and accessories to match coordinate home decor hide laundry accidents and stains with a tie-dye technique and more. RIT Dye works beautifully on many washable fabrics including: Natural fibers-cotton, linen, silk, wool, ramie blends. Synthetics-rayon, nylon, acetate. Blends of fibers where the majority of the fiber is dyeable. *. Blends will tint evenly but will not achieve full color. RIT Dye is not recommended for: * Fabrics with 50%.