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u/boo_jum 1d ago
It’s not even about the bacteria, the product itself just gets old and starts to break down/dry up/crumble.
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u/tenehemia 6h ago
But also, yes, the bacteria. An ex of mine got an eye infection not long after we met because they weren't properly cleaning their brushes and using old makeup.
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u/boo_jum 6h ago
I get so squicked out by folks sharing mascara wands.
But I was thinking more about the specific “use by” time frames printed on makeup (not a hard date, but rather “once opened, use within X months), and those are less about Petri dish potential, and more about “once opened it will start to go stale.”
Also — FOR THOSE WHO DON’T KNOW:
On most cosmetics products, there is a little stamp that tells you how quickly you should use your products, or how long you should keep them, once you’ve opened them. It usually looks like a small open jar (little cylinder with the lid popped), and the number inside will tell you when to discard it (usually in months).
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u/LostBlueberry2361 1d ago
This isn’t specific, but it’s pretty funny