The liquids inside of a glow stick give the product its shine, but if the outer plastic tubing breaks, those contents will leak and potentially stain items like clothing. The contents are not toxic, but a broken glow stick should be disposed of immediately and any spilled liquid should be cleaned from the skin with soap and water. Clothing needs to be cleaned immediately, or the liquids could leave a permanent stain.
Rinse the stain with cold water. Check the garment and remove any small pieces of plastic tubing.
Fill a basin with a gallon of water and 1/4 cup of an oxygen-based bleach cleaner. Stir the ingredients together until the cleaner is completely dissolved.
Place the garment into the basin and let it soak for at least 12 hours.
Remove the garment from the basin and place the garment into the washing machine. Wash it according to the directions on the tag.
Examine the washed garment. If the stain is gone, place the garment in a dryer. If it is still present, repeat the soaking process.