47 Household Hacks That You Never Knew About Before

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Colored Square on Toothpaste

Unilad

Have you noticed the tiny little block of color at the end of your favorite toothpaste? It’s usually color blue, red, black or green, but while some assume that the color tells what chemicals are used in the toothpaste, others say that’s just a hoax. But while we’ve learned that the color doesn’t really make a difference, it doesn’t mean you’re not wondering what it’s for, right? It’s actually nothing too crazy, sorry to say. Manufacturing machines actually use these “eye marks” during the assembly line in order to know where to cut and fold the packaging. If it didn’t get cut, then all the tubes of toothpaste would all be stuck together, which honestly, would totally suck.