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Why Does Toothpaste Come In A Tube
Prior to WWII, toothpaste was packaged in small lead canisters. The inside of the canisters were coated with plastic once it was
revealed that lead from the canisters often leaked into the toothpaste.
It was the shortage of lead and other metals during WWII that ushered in the plastic toothpaste tube we are familiar with
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