How to restore normalcy when the sweater has shrunk
1. Steam ironing
Wrap the sweater in a clean white towel, put it in the steamer of the rice cooker, steam it over water for 10 minutes, then take it out, shake it, and then pull the fluffy sweater back to its original shape. Then, clip it around the thin board with a clothes clip and let it air in a well ventilated place.
2. Thick cardboard:
Cut the sweater into its original size and shape using thick cardboard. Note that the cut should be sanded smooth to avoid damaging the sweater. Then, place the sweater on the cardboard and secure it with several clotheslines at the bottom. Use an electric iron to steam iron various parts of the sweater repeatedly, and remove it after it has completely cooled down.