Washer — Add a few drops to unscented liquid laundry detergent before adding the detergent to each load.
Dryer — Add 3–4 drops to a wool dryer ball. Use a second wool dryer ball to press the oil into the first and allow it to absorb. Add both balls during the final 10–15 minutes of the cool-down or no-heat cycle. Always follow the appliance manufacturer’s instructions.