3) Alcohol
Here’s another great ally to your sweaters. Prepare a mixture with: 1โ2 tablespoon of alcohol, 1 tablespoon of liquid soap for wool, 3 tablespoons of ammonia, and 1 tablespoon of turpentine. According to this procedure, the sweater will have to soak for at least the whole day. After 24 hours, simply rinse it in cold water, pat dry with a clean towel, and let it dry flat.