How did you jump from "antibacterial soap is no more effective than soap" to "soap and water is no more effective than water"?
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Quickly
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One of the differences might be that most of us aren't in places where hundreds of people per day specifically bring their out-of-control infections. And yes, dirt. And also bacteria, most of which can be killed-off by soap and water (heat/changed Ph is a powerful combo).
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Most of the benefit of soap is washing off the bacteria, not killing it. Antibiotics are good at killing bacteria, but that's not why soap is effective - which is why it doesn't help. cc:
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Soap is useful because it cleans germs but does not attack them and increase resistance. Antibacterial soap attacks them - only helpful if you are in a hospital and doing a thorough wash of your hands and forearms (a la a full treatment of antibiotics)
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Also, people who aren't trained don't use antibacterial soap properly. Half-killing bacteria is worse than leaving it alone or washing it off.
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It just comes back angry and with a thirst for revenge.
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Grease and water are imiscible, but (grease and soap) do mix and so do (soap and water). Soap is a middleman.
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because most of the effectiveness of handwashing is in the mechanics of the technique, not the soap itself. but in hospitals you still want the extra bit of marginal effectiveness (they would probably be legally culpable if they didn't exploit something that was widely available)
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