Soak the sweater in warm water at 30℃-50℃, or steam it in a pot for 20 minutes to let it slowly recover its shape, and then put it in cold water for setting. Finally, remember not to wring it out when drying, but to dry it flat. Put the steam iron about two centimeters above the clothes, let the steam soften the fibers, and then reshape the sweater with the other hand. In this way, with the cooperation of hands, it is hoped that the sweater will return to the state of tighter fibers as much as possible.

1. Soak the sweater in warm water at 30℃-50℃, or steam it in a pot for 20 minutes, let it slowly recover its shape, and then put it in cold water for setting. Finally, remember not to wring it out when drying, but to dry it flat.

2. Put the steam iron about two centimeters above the clothes, let the steam soften the fibers, and then shape the sweater with the other hand. In this way, with the cooperation of both hands, it is hoped that the sweater will return to a state of tighter fibers as much as possible.

3. Pour the silk cotton into warm water and stir well. Soak the sweater in it 15 minutes, and knead it as gently as possible. After washing, soak it in softener for three minutes. Don't wring it out. Just squeeze it into a ball and squeeze it out. Finally, put it in a clothes rack to dry evenly.

4. When drying the sweater, in order to prevent the sweater from getting bigger and longer, it is best to spread the sweater flat and dry it, or spread the umbrella out and hang it directly on it. If you feel that it is not easy to dry, you can also hang the sweater with two or three hangers and put the tail on the hanger, so that the sweater will not be deformed.