How do you colour cotton wool?

To color cotton wool, you can use liquid dye or food coloring mixed with water. Simply soak the cotton wool in the colored solution until it reaches the desired shade, then remove it and let it dry on a paper towel. Alternatively, you can spray or dip the cotton wool in the dye for a quicker method. Always wear gloves to avoid staining your hands and work in a well-ventilated area.