Dr. Beckmann Colour & Dirt Collector Sheets keep your colours brighter for longer. Wash mixed colours with confidence Dr. Beckmann Colour & Dirt Collector Sheets keep your colours brighter for longer. One sheet per wash will collect the dirt and dye that can come out of your clothes, transferring to others and causing colour loss and dullness of fabrics. Important Information New coloured items should be washed separately first as product performance cannot be guaranteed where thare are excessive amounts of colour bleed. Always check garment care label and machine instructions beforehand. Use two sheets for heavily dyed garments (particularly cottons) of those with poor colour fastness. Keep out of the reach of children.