Dylon fabric dyes are easy to use and completely safe for your washing machine. The all-in1 formula revives or transforms the colour of your clothes and soft furnishings, providing long lasting and intense colour. 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. No wardrobe is complete without a classic pair of good fitting jeans. In case you want to bring them back to life, use Jeans Blue for a fresh injection of colour.