When you have all the colours in the rainbow to choose from, it would be a shame to be limited by the colour of your fabric. With DYLON Pre-Dye you don't have to, let us explain… If you have a white, cream or pale coloured fabric, you needn't worry, but if you have a dark or brightly coloured fabric you'd like to change to another colour, you'll need to remove that colour before you dye, for the best results. DYLON Pre-Dye makes it pretty easy to do this, it lightens fabric to a neutral shade, creating a ‘blank canvas' that you can dye any colour.