How to Wash Polyester: 11 Steps (with Pictures)
Jan 18, 2022 · Soak white polyester fabrics overnight. Soak white garments overnight in a mixture of 1 gallon ( L) of warm water and 1/2 cup of automatic dishwasher detergent. This will help remove dirt and stains from your white fabrics in advance of washing them. If you have less time, you can soak for 12 hours.