Follow garment care label instructions. 1. Start washer and grab your Gain. 2. Add your favorite scent-sational Gain detergent. Fill to Top: heavily soiled large loads. Line 3: large loads; heavily soiled medium loads. Line 2: medium loads. 3. Add clothes. Incredible freshness is just that easy! To Test for Colorfastness: Dissolve 2 tablespoons (30 ml) of Gain in 1 cup (250 ml) hot water. Soak 20 minutes. Rinse and dry. If a color change is detected, wash garment separately in cold water.