ChronoRank #30
ChronoRank #30Hygiene milestones (earliest first) ↓
1775
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1857
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1888
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1924
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1959
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1988
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The answer
- #1Alexander Cumming patents the flush toilet1775Wikipedia
- #2First commercial toilet paper (Gayetty)1857Wikipedia
- #3First commercial deodorant (Mum)1888Wikipedia
- #4Kleenex facial tissues introduced1924Wikipedia
- #5First electric toothbrush (Broxodent)1959Wikipedia
- #6Purell hand sanitizer introduced1988Wikipedia