Second, then soak the sweater in hot water. At this temperature, the sweater will shrink slowly. Soak for about 1 hour, then set in cold water, and finally lay flat to dry.

Third, the principle of high temperature shrinkage, steam iron recovery. Put the steam iron two centimeters above the sweater. After steam softens the fibers, shape the sweater, flatten it and dry it.

Sweaters made of cashmere have the best warmth retention, but cashmere is very fragile and will deform when it meets water. Only suitable for dry cleaning, never wash.

Sweaters must be washed with cold water. Hot water will shrink sweaters and the washing machine won't work. Washing machines can also deform sweaters. In addition, before washing, pat off the dust on the sweater and add special detergent for wool to gently rub it.

For sweaters made of cotton and chemical fiber, you can choose to wash them by hand. If you use a washing machine, you should use a gentle mode or a drum washing machine. In order to prevent the surface from rubbing and pilling, remember to turn the sweater upside down before washing it.

Flat drying, if you hang it directly with a hanger, the gravity of water will make the sweater longer and longer.