Does Laundry Detergent Expire? - The Spruce
Jul 21, 2021· Powdered Formula Laundry Detergents. Powdered laundry detergents do not expire or lose effectiveness unless they have been exposed to moisture. If a powdered detergent becomes hard or cakey, it should be discarded. The powder will probably not dissolve correctly or completely in the washer leaving soap deposits on your clothing.