# Why Do We Need Soap If We Already Have Water? for Kids

An episode of [Dad, How Does It Work? Science Podcast for Kids](https://invisiblenetwork.ai/podcast/1877456012), 28 Sep 2026, 5:12.

Audio: https://anchor.fm/s/10eb0cbb0/podcast/play/126402684/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-8-28%2F9b376b7b-2a9f-7a6e-9e49-74e9f5a651b5.m4a

You rinse greasy pizza fingers under the tap.The water runs over them, but they still feel slippery.Why can water wash away mud but struggle with oil?What does soap add that water is missing?Are the bubbles really doing the cleaning?Does soap have to kill every germ to get it off your hands?Somehow, soap helps water grab what it could not grab alone.

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