1 bottle of this environmentally friendly liquid dye should be used for For 907g of dry fabric. Rit Dye is a fabric dye that works best on natural, washable fabrics and materials, such as 100% cotton, linen, silk or wool. Rit will dye synthetics such as rayon and nylon and fibre blends that have at least 60% cotton or another dyeable fibre. (blends will tint evenly but will not achieve full color). Rit will also dye nylon-based plastic such as those found in buttons, fasteners and lacrosse sticks
 as well as natural materials such as wood, wicker, paper, feathers and cork. When dying, the fiber content of the material being dyed as well as the weight, effects how the colour appears, making fabrics like cotton, wool and silk absorb dye differently, slightly changing the hue and brightness of the chosen color. If you are in doubt as to whether your fabric will accept dye or achieve the color you want, we recommend testing a swatch.