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How does hand sanitizer kill germs?
Question Date: 2009-05-20
Answer 1:

That is a great question about hand sanitizer. Hand sanitizer contains a high percentage of alcohol, which kills bacteria cells. It kills them by destroying their cell membranes and the proteins inside the cells. Luckily, the alcohol does not destroy human skin cells. A negative effect for people is that it can lead to dry skin, so hand sanitizers usually contain a moisturizer along with the alcohol. While hand sanitizer can kill bacteria, it cant remove dirt, which is why hand sanitizer shouldnt be used as a substitute for hand washing.

Thanks for your question!

Answer 2:

Alcohol dissolves the bacterial cell membranes.

Answer 3:


It's poisonous, and germs don't have any skin to protect them from the poison.

Answer 4:

Hand sanitizer has high levels of alcohol in it. The alcohol kills any bacteria.

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