All-in-one fabric dye to be used in automatic washing machines with permanent results Ideal for changing or rejuvenating the color of garments Appropriate to be used on natural materials: cotton, linen and viscose Colour mixing laws follow (e.g. red dye on blue fabric will give purple) One pack will dye as much as 500g of material to the whole shade or rejuvenate the color on as much as 1kg of material