The laundry miracle: how to solve 10 stubborn problems – from stains to rough towels to ‘permastank’

For 1 million people on Reddit, the science of clothes-washing is a regular topic of discussion. I tried out their tips and discovered some simple, sustainable answersIt started with a sunscreen stain – a yellowed collar on a white T-shirt that persisted wash after wash. A spray of stain remover did nothing; drying …

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