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the claim

Washing hands with soap kills more germs in hot water than in cold or warm water.

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that washing hands with soap kills more germs in hot water than in cold or warm water?

No. A controlled experiment testing soap at water temperatures from 4.4°C to 49°C found no significant difference in efficacy attributable to water temperature, and the CDC states that warm and cold water remove the same number of germs from hands.

Verdict: REFUTED · 0 sources for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 2
Is warm water more effective than cold water for washing one's hands?
2011
Get citation
Is warm water more effective than cold water for washing one's hands?. (2011). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/2560/is-warm-water-more-effective-than-cold-water-for-washing-ones-hands

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More against · 1
Hand Hygiene Frequently Asked Questions | Clean Hands | CDC
Get citation
Hand Hygiene Frequently Asked Questions | Clean Hands | CDC. (n.d.). cdc.gov. https://www.cdc.gov/clean-hands/faq/index.html

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