Dyeing wool at home is a fun experiment, using herbs from the garden, spices, fruit, and other plant extracts. I do test strands for each wool type to check the colour intensity before doing a large ball. Using mordants such as aluminium, salt or vinegar will bind the dye to the wool and keep it colour fast from fading. The natural, soft colours will gently fade over time but give such natural, neutral tones. This kind dyeing process keeps the product in a natural state and is soft on human skin.