GL-70

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An adervisement for Gleem toothpaste, featuring GL-70, from TIME magazine's March 31, 1958 issue
An adervisement for Gleem toothpaste, featuring GL-70, from TIME magazine's March 31, 1958 issue

GL-70 was what Gleem toothpaste, in the 1950s, advertised as its unique decay and mouth-odor fighting ingredient. Whether or not GL-70 was a real ingredient or what it was is unknown.

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