Why does water temperature matter when washing clothes?

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Visiting my parents, my mom seems disappointed to find me washing my clothes in cold water, she says it’s just not right but couldn’t quite explain why.

I’ve washed all of my laundry using the “cold” setting on washing machines for as long as I can remember. I’ve never had color bleeding or anything similar as seems to affect so many people.

EDIT: I love how this devolved into tutorials on opening Capri suns, tips for murders, and the truth about Australian peppers

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15 Answers

Anonymous 0 Comments

Things generally dissolve/react better in hot water, which means the detergent can do its job better. The downside is that hot water can also shrink some fabrics and make some not-so-well-bonded colors bleed.

However, there are plenty of modern detergents designed to work well in cold water, so as long as washing in cold water does the job, it’s generally better since doesn’t wear down fabrics as quickly. Similarly running the dryer at a low temperature is less stressful for the fabrics.

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