Are you doing too much laundry? Probably—and it’s not just your time that you could be saving. Over-washing our clothes is a sustainability issue that’s often not discussed, but garment care is actually responsible for a significant amount of an item’s carbon footprint over the course of its life. In fact, a study by Levi’s found that for its iconic 501 jeans, the consumer care phase—i.e. washing and drying—was responsible for 37 per cent of its carbon footprint, as well as 23 per cent of total water consumption.
“Changing our home laundry routine is one of the biggest opportunities for resource conservation,” Paul Dillinger, Levi’s vice president, global head of product innovation, tells Vogue. “It’s also an incredibly easy solution: we’re just asking people to not do their laundry.”
But how often should we actually be washing our clothes? Levi’s recommends that its customers wash their jeans after every 10 wears. “The average Chinese consumer washes their jeans after about four wears. In the UK and France, the average drops to 2.5 wears between washing. In the United States, it’s about a 2.3 wear/wash ratio,” Dillinger continues. Shifting from washing your jeans every 2.5 wears to every 10 wears would reduce the carbon footprint of the consumer phase by 75 per cent.
It’s not just our jeans that we’re over-washing, though. “Wool garments are probably most frequently over-washed,” Dr Kyle Grant, CEO of Oxwash, an eco-friendly laundry company and dry cleaning alternative, says. “Wool has some unique characteristics that contribute to its ability to resist dirt and odour – it can be spot cleaned, aired and/or steamed with an iron to get the shape back.” Oxwash recommends washing wool jumpers after every five wears, while some knitwear experts say that we can actually get away with washing our jumpers just at the end of every season.
Bras are also often over-laundered – Grant suggests hand-washing them after every two or three wears. Meanwhile, dresses should be washed after every one to three wears, shirts after every one to two wears, and T-shirts after every wear. “Some fibres such as cotton should be washed with stronger detergents and higher heat for the dirt to release, [although] most of us rarely get our clothes dirty enough to need higher temperatures,” Grant continues.
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