Whilst every care is taken to remove any excess dye from our fibres, red or dark colours should always be tested before stitching. Air dry thread out of direct sunlight before using.
Pull a sheet of white paper towel or cloth along a moistened length of thread. Alternatively, press the thread between the folds of a cloth with a steam iron. If any colour shows on the cloth, rinse the thread several times in cool water until all excess colour is removed.