For sweaters made of wool, cashmere and other wool, it is best to use cold water to wash them. Because hot water can cause the wool fibers to shrink and distort the sweater. It can also accelerate the fading and wear of the sweater. So when washing these types of sweaters, it is best to choose cold water with a lower temperature.

For cotton, polyester and other materials of the sweater, you can use warm water to wash. However, you should also determine the specific water temperature according to the label of the sweater. Generally speaking, warm water of about 30 ° C is more suitable for most materials of sweaters.