A Germ Expert Explains How Often We Should Be Washing Sweaters

According to environmental toxin expert and founder of Slightly Greener Tonya Harris, two to five wear before washing is average, "but it also depends on how the sweater is worn and what the material is made of."

For example, wearing something under your sweater will extend the life of your sweater by reducing the number of washes, she says.

In terms of materials, things like cotton, cashmere and silk should be washed after two to three uses, while more durable materials such as wool or hard-wearing synthetic blends can be worn up to five times.

In short, you definitely don't have to wash your sweaters every time you wear them, and if you want to split the time between washes it is best to wear an undershirt.

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