Suitable for: cotton, linen & viscose. Mixes with synthetics will dye to lighter shades (pure synthetics will not dye). One pack dyes 600g of fabric to full shade, up to 1.8kg to lighter shades. Between black and white there are infinite shades of grey. This particular colour brings subtle sophistication to any wardrobe, paired with black or rich red tones this shade of grey looks fabulous.