Formally known as Light Blue No6. Change or renew the colour of your clothes and soft furnishings with this easy to use machine fabric dye, that won't wash out. For use in automatic front loading machines only. Suitable fabrics: cotton, linen, viscose and polyester/cotton mixes. Lighter shades on polyester mixes because pure synthetics do not pick up the dye. Not suitable for wool, silk, polyester, acrylic, nylon and other synthetic fibres or fabric with special finishes e.g. 'dry clean' only. One pack will dye up to 600g /1lb dry weight fabric. Dyeing larger amounts (up to 1200g) will give a lighter colour. Final colour depends on the original fabric colour e.g. sunflower dye on red fabric will give orange.