Dyeing your hair should be a fun experience to change your personal appearance, without worrying about the hair dye staining your towels. Just as it can dye your hair, it can easily dye the fibers in towels. While dyeing your hair try to use an old towel that you don't care about. If you have a towel with an old, dry hair dye stain it will be harder to be removed, but if the stain is fresh you can remove the hair dye from the towel with a few products.
Saturate the stain with hairspray. Dab the stain with a dry rag.
Moisten a rag with rubbing alcohol. Dab the hair dye stain with rubbing alcohol.
Pour hydrogen peroxide on the stain. Scrub it with the toothbrush. Scrub the stain in straight lines, never in circles as it will only rub the stain in further. Dab the stain with a dry rag.
Saturate the stain with vinegar.
Place the towel in the wash. Add 1/2 cup of laundry detergent to the machine and wash the towel on hot.