Use any empty plastic bottle to store your homemade liquid fabric softener between uses. As you would with commercial softeners, add your homemade softener to the dispenser in your washing machine. Fill to the full line. For older machines without a dispenser, use 2-4 tablespoons of homemade softener, depending on the hardness of your water. Adjust as needed.
Try this DIY homemade laundry detergent for cleaning all your dirty laundry.