Jul 30 2020

How Soap Works

49 min 4 movies discussed
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Soap is a miraculous substance – and mysterious too: we have no idea how humans first figured out to make it. We lived with soap for millennia before we thought to use it to wash ourselves with it, but once we did a love affair with cleanliness was born.

AI Summary

# Stuff You Should Know - Soap Episode

Josh and Chuck dive deep into the surprisingly magical world of soap, exploring how this humble cleaning agent actually works at the molecular level to fight dirt, bacteria, and even viruses like COVID-19. They trace soap's unexpected 5,000-year history from ancient Mesopotamia through the Roman Empire and medieval Europe, revealing that people used soap for everything except personal hygiene for thousands of years before someone finally decided to wash themselves with it. The episode covers the surprising science behind why soap is far more effective than hand sanitizer, debunks the antibacterial soap myth, and offers surprisingly entertaining stories about how major soap brands like Ivory and Castile became household staples.


Movies Discussed

Fight Club
Fight Club
1999 2h 19m
★ 8.4
"Fight Club had the big joke about using lard from liposuction lard — Josh references Fight Club's famous joke about using liposuction fat as an ingredient in soap." — Josh
Hey Dude
Hey Dude
1989
★ 6.8
"HeyDude the 90s called, David Lasher and Christine Taylor, stars of the cult classic show, HeyDude — Hey Dude is mentioned multiple times in podcast advertisements as a cult classic 90s show."
The Yearling
The Yearling
1946 2h 8m
★ 6.7
"I looked up the movie the yearling. Remember that? It's about that little baby deer — Josh mentions The Yearling in listener mail discussion about what a yearling actually is, clarifying it's about a deer." — Josh
True Lies
True Lies
1994 R 2h 21m
★ 7.1
"Like that scene in true lies where Jamie Lee Curtis is hanging from the helicopter and Arnold Schwarzenegger is holding on to her — Josh uses the True Lies helicopter scene as an analogy to explain how soap molecules work with water and dirt." — Josh

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