ScienceTech

Do you know why toothbrushes have these colored fibers? Here are 4 common things you may not be aware of

Do you know why toothbrushes have these colored fibers? Here are 4 common things you may not be aware of

You may have noticed that toothbrushes have colored fibers, but do you know why they are colored? In fact, they serve as a signal to people. When their color starts to fade like the color in the picture, it is time that you need to change the toothbrush immediately as the current brush has expired.

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