1, pour water into the basin first, so you don't need to wear a sweater.
2. Then pour in the right amount of white vinegar and stir.
3. Then immerse the sweater in water.
4, soak for about half an hour, let the white vinegar fully soften the sweater fiber.
5. After half an hour, take out the sweater, wash it and wring it out.
6. In order to further prevent the sweater from shrinking again, it needs to be wrapped in a bath towel and dried in the shade.
7. When the sweater is dry, it not only restores its original state, but also becomes shiny.