Name: ann
Message: Hi can i and how can i, dye my big wool jumper have tryed to dye it dark blue but did not take the jumer is cream with dark blue stripe around the middle of the juumper,when i dyed it the cream part of the came out very light blue have tryed twice useing coldwater drye.

The problem is that you cannot apply cold-water dyes, using the cold-water recipe, to wool, and still have it work the way that it does on cotton.

Typically wool is dyed using hot-water dye, which is gradually heated with the wool, in a cooking pot, and then held at the boil for an hour before cooling gradually. (Sudden temperature changes can turn wool to felt.) Unfortunately, heat will shrink wool, so this procedure is not likely to leave your jumper its original size.

PRO Chemical & Dye has a recipe for using cold-water dye on wool without having to spoil a cooking pot. (You must never use a cooking pot for food after you have used it for dyeing in!) It is necessary to use a mild acid, such as vinegar, in the right quantity, and to add heat, in this case by leaving the garment in a black plastic garbage bag in the sunlight.