How Much Laundry Detergent to Use - The Spruce
The optimum amount of 2X liquid laundry detergent for a high-efficiency washer is two teaspoons; 4X liquid laundry detergent: one teaspoon; 10X liquid laundry detergent: 1/4 teaspoon for a 12-pound load of laundry. If you have soft water in your area, use even less. For hard water that is untreated, use about one-fourth more product per load.
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